The Essence of the Xici Shangzhuan: A Philosophical Inquiry into the Junzi's Settled Peace and the Order of the Yijing
This article offers a deep reading of the core proposition in the Xici Shangzhuan — 'What the junzi dwells in and finds peace in is the order of the Yi' — integrating the pre-Qin context, the Confucian scholarly lineage, and the structure of the Zhouyi to elucidate how the junzi, by embodying the Way of Heaven and Earth, takes the Yi as the foundation of settled existence, contemplates the images and savors the statements, and ultimately attains the state of 'auspiciousness with nothing unfavorable.'

Chapter Six: Detailed Exegesis — "Thus Heaven Itself Aids Him — Auspicious, with Nothing Unfavorable"
This phrase quotes the top nine line of the Dayou (Great Possession) hexagram. The Xici Shangzhuan explains:
"The Master said: 'To aid means to help. What Heaven helps is what accords. What people help is what is trustworthy. He who treads in trustworthiness, keeps accord in mind, and furthermore honors the worthy — therefore Heaven itself aids him, auspicious with nothing unfavorable.'"
Three conditions are specified: (1) Trustworthiness (xin) — "A person without trustworthiness — I do not know how he can manage at all" (Lunyu, "Wei Zheng"); "Without the people's trust, nothing can stand" (Lunyu, "Yan Yuan"). (2) Accord (shun) — according with the Heavenly Way, natural law, and the hearts of the people. (3) Honoring the worthy (shang xian) — esteeming and promoting the capable and virtuous.
"Auspicious with nothing unfavorable" does not mean no difficulties, but that the junzi, through virtue and wisdom, turns danger into safety. Behind it lies "being active and vigilant all day, alert in the evening as if in danger" (Qian, nine in the third) — tireless effort, not idle waiting.
The passage embodies the pre-Qin vision of Heaven-Humanity unity: a person does not passively receive the Mandate but through virtue and wisdom calls forth Heaven's aid — consistent with the Zhongyong: "Sincerity is the Way of Heaven; making oneself sincere is the Way of Humanity."