A China problem.

Jie Jun, Russia starts from here,

If honest people know this,

The bow can't escape.

In these four hexagrams, Wu Yong cleverly hid the word "Lu Junyi's opposition" at the top of the four sentences, while Lu Junyi, who was bent on avoiding the "mass annihilation", had no intention to examine the secret.

Sure enough, after these four poems were written, the court got the evidence, and the teacher of Daxing asked for politics everywhere to catch Lu Junyi, and finally drove him to the wall.