TL;DR: The Xinxin Ming (Tín tâm minh) is a short verse in Literary Chinese, traditionally attributed to the Third Patriarch Sengcan (Tăng Xán), opening with the line "the supreme way is not difficult," with content leaning toward breaking attachment and pointing directly to the non-dual mind. The Zhengdao Ge (Chứng đạo ca) is a longer song by Yongjia Xuanjue (Vĩnh Gia Huyền Giác) of the Tang dynasty, presenting the path of realization in a broader sequence, from breaking delusion to the state of enlightenment and how a practitioner faces conditions and circumstances. Both belong to the Chinese Zen verse tradition, not to the texts of Vietnamese Buddhism, and comparing them reveals two different ways of presenting the same goal of liberation.
Why are these two verses often placed side by side?
In the treasury of Chinese Chan verses, the Xinxin Ming (信心銘) and the Zhengdao Ge (證道歌) are the two texts most often quoted when people want to speak of the core of Chan. Both are verse, both revolve around seeing one's nature and breaking attachment, and both have been chanted across many generations. But they appeared at different times, are tied to two different patriarchs, and present the path of practice and realization in two very different ways. Placing them side by side is not to choose which is higher, but to see that Chan has many ways of expressing the same thing.
Tradition attributes the Xinxin Ming to the Third Patriarch Sengcan, and the Zhengdao Ge to Yongjia Xuanjue, a Chan master of the Tang dynasty. Both attributions belong to the category of traditional attribution, and modern scholarship does not regard them as firmly proven. In other words, readers should receive them as texts of the tradition, not as historical documents with verified chronology.
What is the Xinxin Ming and who wrote it?
The Xinxin Ming is a short verse in Literary Chinese, traditionally recorded as the work of the Third Patriarch Sengcan. The text survives in the Great Canon, placed at the end of the Jingde Chuandeng Lu, volume 30[1]. It opens with the line "the perfect way is without difficulty, it only dislikes picking and choosing," meaning the great way is not hard, only the act of choosing and discriminating is the obstacle. That opening line alone shows the whole bent of the text: it does not discuss graded practice, it does not discuss stages of fruition, but speaks directly to the mind still caught in discrimination, by which the way is obscured.
In form, the Xinxin Ming is not divided into chapters and has no system of practitioner levels. It moves by way of paired opposites: as soon as it names one thing it names its opposite, then breaks both. For example, it says that clinging to either side wastes effort on both, that being and non-being depend on each other to arise, that the one and the all are not separate. This manner of presentation makes the text hard to grasp conceptually, yet it is very close to the spirit of "not relying on words and letters" that Phan Văn Hùm noted when he surveyed Chan in Phật giáo triết học in 1942[2].
Which lineage does this text belong to?
The Xinxin Ming belongs to the early verse tradition of Chinese Chan, not to Vietnamese Buddhism. This point needs to be stated clearly, because in Vietnam the text is often quoted in books on Chan, which can lead readers to think it is a Vietnamese text. In fact it is a product of the Chinese Chan lineage, transmitted to Vietnam through the Northern Buddhist path[1].
What is the Zhengdao Ge and who wrote it?
The Zhengdao Ge is a long song, traditionally attributed to Yongjia Xuanjue, a Chan master of the Tang dynasty[4]. Unlike the Xinxin Ming, the Zhengdao Ge does not only break attachment but also presents the path of realization in a broader sequence: recognizing delusion, letting go of attachment, seeing one's own nature, then living with that seeing amid conditions. It has passages on the practitioner's attitude toward praise and blame, gain and loss, and on not getting stuck in outer forms of practice.
If the Xinxin Ming leans toward breaking, the Zhengdao Ge leans toward presenting. It is longer, its rhythm is broader, and it allows the reader to picture a journey. This is the fundamental difference in genre: the Xinxin Ming is a ming, condensed and almost speaking only in paradox; the Zhengdao Ge is a ge, long-winded and able to tell a story. Both belong to the Chinese Chan verse tradition.
How do the two differ in content?
The greatest difference lies in how each sets up its question. The Xinxin Ming sets it up from the discriminating mind: as long as there is choosing, liking and disliking, comparing, the way is obscured. The Zhengdao Ge sets it up from the seeing: what does one who has realized the way see, and how does one live with that seeing. One text speaks of what must be let go, the other of what has been seen.
| Criterion | Xinxin Ming | Zhengdao Ge |
|---|---|---|
| Traditional attribution | Third Patriarch Sengcan | Yongjia Xuanjue |
| Period | Early in the Chinese Chan lineage | Tang dynasty |
| Genre | Short ming, Literary Chinese | Long ge, Literary Chinese |
| Focus | Breaking attachment, pointing directly at non-duality | Presenting the path of realization |
| Manner | Paradox, paired opposites | Narrative, exposition, encouragement |
| Length | Short, condensed | Long, broad rhythm |
The table is only a way of organizing for easy recall. In reality the two texts overlap in many places, since they sit within one stream of thought. The difference is not in the truth spoken, but in the way of speaking.
Why are both called foundational verses of Chan?
Both are called foundational verses because they appeared early and are widely quoted in Chan anthologies. The Xinxin Ming is in the Jingde Chuandeng Lu[1], an important transmission-of-the-lamp history of Chan. The Zhengdao Ge is also chanted within the same stream of documents. A text being included in a transmission-of-the-lamp record does not prove it was written by that patriarch, but it does prove it was received by the Chan community as an authoritative text.
It is worth noting that neither text teaches a specific method of practice. They do not say how long to sit, what to recite, how to keep precepts. They speak of the seeing. This is characteristic of the Chan lineage that Phan Văn Hùm described as holding to not relying on words and letters, transmitting mind to mind, and holding that the true nature of the universe belongs to the realm of direct intuition[2].
Is the Xinxin Ming only for those who have already awakened?
Not exactly. The text does not state that it was written only for the awakened. But it is true that it does not provide a step-by-step path. New readers may find it hard to grasp, because it breaks continuously. The Zhengdao Ge is easier to approach in that it has a narrative thread, though it is not an introductory book either.
How does it relate to Vietnamese Chan?
Vietnamese Chan has its own texts, and comparing them with the Xinxin Ming or the Zhengdao Ge requires the right context. Trần Nhân Tông, the patriarch of the Trúc Lâm Chan school, left the Đắc thú lâm tuyền thành đạo ca, a Nôm song about finding the joy of the mountains and forests while realizing the way, ending with four lines of Chinese verse[3]. This text pairs with the Cư trần lạc đạo phú by the same author. The notable point is that the Đắc thú lâm tuyền thành đạo ca is written in Nôm, not pure Literary Chinese, and speaks of the path of practice amid mountains and forests, closer to Vietnamese life than to the paradoxical style of the Xinxin Ming.
Placing the Đắc thú lâm tuyền thành đạo ca beside the Xinxin Ming and the Zhengdao Ge shows that Vietnamese Chan has its own way of expression, not merely copying China. However, it should be said clearly that this is the writer's comparison, not a textual relationship proven in the source.
How should readers approach these two texts?
First, they should be read as texts of the tradition, not as systematic philosophical treatises. Neither aims to prove anything; they aim to point directly. So reading the Xinxin Ming while trying to find a logical argument will leave one disappointed. Reading the Zhengdao Ge while trying to find a practice method will also leave one disappointed.
Second, one should read a translation alongside the original if possible. The Xinxin Ming has its Literary Chinese original on Chinese Wikisource[1], and readers can compare line by line. Such comparison helps one see the condensation of the original, which translation often loses.
Third, one should place the two side by side to see how they complement each other. The Xinxin Ming breaks attachment to method; the Zhengdao Ge presents the seeing once method has been let go. One says "do not choose," the other says "this is the seeing when there is no more choosing." Reading both gives a fuller picture of how Chan presents the path.
Gợi ý của Nhật Nguyệt: for beginners, one may start with the Zhengdao Ge for its narrative thread, then move to the Xinxin Ming to see the breaking side. For those already familiar, reading the Xinxin Ming first helps grasp the non-dual seeing, then reading the Zhengdao Ge shows how that seeing is expressed in the practitioner's life. This is a reading suggestion, not a teaching of scripture.
In the end, where does the core difference lie?
The core difference lies in genre and focus. The Xinxin Ming is a ming, condensed, breaking attachment, pointing directly at the non-dual mind, traditionally attributed to Sengcan. The Zhengdao Ge is a ge, long-winded, presenting the path of realization, traditionally attributed to Yongjia Xuanjue. Both are foundational verses of Chinese Chan, both are chanted within the same stream of documents, and neither teaches a specific method of practice. Their greatest common point is that both speak of the seeing, differing only in the way of speaking.
