《易传·彖传上·需》
需， 有诚信广大亨通，而占问吉利 ，位于天子之位，故居正而得中道。 宜于涉越大河 ，前往可以建功立业。
需有孚，光亨贞吉，位乎天位，以正中也。利涉大川，往有功也。
Xu, with sincerity, great success, and divination is auspicious. Located on the throne of the Son of Heaven, so it is in the middle and has a middle way. It is suitable to cross the big river and go forward to achieve great achievements.