Dui is the trigram traditionally associated with Lake. Its two unbroken lower lines and divided upper line give it a distinctive open top. A lake offers an accessible image for a shared place: people gather near it, and its surface receives what happens around it. The traditional emphasis on delight invites attention to what makes an encounter enjoyable and what keeps that enjoyment sincere.
The three-line Dui ☱ is one component of the Yijing's figures. Hexagram 58, also named Dui, places Lake above Lake and contains six lines. It has a fuller text about the resulting situation. This article teaches the trigram's shape and vocabulary, so that you can recognize it in that doubled figure and in other combinations without treating every appearance as the same message.
An open top above two unbroken lines
From the bottom upward, Dui is yang, yang, yin: 110 when 1 means yang and 0 means yin. The last digit describes the top line, not the first line seen in a printed diagram. Compare Gen, 001, which has the reverse arrangement. Turning one drawing upside down would produce the other pattern, but when reading a hexagram, preserve its orientation and identify each trigram in its actual place.
Hexagram 58 repeats Dui in both positions. Hexagram 10, Lü or Treading, has Lake below Heaven; hexagram 31, Xian or Influence, has Lake above Mountain. These examples show Dui participating in different relationships. The familiar lake image can help you remember the component, while the complete hexagram names and texts help you avoid reducing all three to a generic instruction to be cheerful.
Read 說 as delight in this passage
Classical text · Shuo Gua, chapter 7
兌，說也。Original editorial explanation of the quotation
Original editorial gloss: Dui expresses delight; 說 here has the sense of joy.
The chapter 7 phrase 兌，說也。 uses 說 in the sense of delight or joy, a reading associated with the modern character 悅. Translating it here simply as speaking misses the passage's central characterization. Speech does appear among Dui's other traditional associations, which makes conversation a reasonable topic to explore, but it should not be used to erase the distinction between the short classical wording and a later explanatory connection.
The received symbolic lists also call Dui the youngest daughter. Such kinship labels organize a historical set of correspondences; they do not describe what daughters, younger people, or women are naturally like. Likewise, Lake is an image used for interpretation, not a claim that every actual lake is tranquil or welcoming. Real landscapes have depth, changing weather, and local conditions that a three-line symbol cannot summarize.
Plan a walk people can enjoy together
Consider friends planning a weekend walk. One suggests a long hill route, another prefers a flat path with places to sit, and a third mainly wants time to talk. If everybody agrees with the first suggestion just to seem enthusiastic, the outing may suit only one person. As a modern reflection on Dui, they could compare the route, pace, and meeting time openly. Enjoyment can come from making room for different preferences, rather than from pretending they all want the same afternoon.
They might choose a short park circuit followed by a cafe stop, with an optional longer walk for anyone who wants it. A friend can decline either part without needing an elaborate excuse. The point is a sincere invitation, not a guarantee that every preference will be satisfied. This example is our contemporary reflection on the image, not an outing prescribed by the classical text. Whether the gathering works depends on the plan and how freely the friends can respond.
Delight does not require everybody to agree
Dui is easy to flatten into smiling, flattery, or saying yes. Those habits can conceal resentment as readily as they create ease. A more useful question is whether an exchange leaves people freer to speak honestly. Delight can accompany a lively argument, a careful correction, or a shared joke whose participants all enjoy it. The word is an interpretive starting point, not a moral duty to perform happiness.
The divided upper line is a structural feature; it does not prove that a person is weak, deceptive, or romantically interested. A lake in a picture also does not identify a Dui trigram unless the three-line pattern matches. Compare Gen for boundaries around an exchange and Li for the clarity that helps discussion. Read hexagrams 10 and 31 alongside 58 to notice how different partners and positions develop different six-line situations.
Try these questions
- What makes this exchange enjoyable without requiring agreement?
- Is anyone being asked to hide a concern to keep the mood pleasant?
- Which boundary would make participation feel more voluntary?
Source and editorial context
《說卦傳》 · Shuogua (Discussion of the Trigrams), chapter 7
The short quotation comes from the received Shuo Gua commentary, part of the Ten Wings. Its attribution and composition history are debated; we do not assign it a certain author or date. The translation and modern examples here are original editorial interpretations. Classical family and body associations are historical symbols, not rules for judging people or diagnosing conditions.