After Wu Zetian's family was killed, only he survived. Why was he spared?

Because Wu Xuyou is not so obsessed with power, he has no threat to Wu Zetian, so he dodged a bullet. After Wu Zetian ascended the throne, she reused her relatives for safety. These people rely on Wu Zetian as the emperor, and their daily behavior is very overbearing. Therefore, after Wu Zetian abdicated, these relatives of Wu Zetian will naturally have no good end. However, one of these people was not persecuted, and that person was Wu.

At that time, Li Zhi, determined to make Empress Wu Zetian, killed many ministers who opposed it. After Wu Zetian succeeded in becoming her own queen, her power began to increase day by day. At the same time, Li Zhi's health is getting worse every day. So Wu Zetian began to constantly intervene in the DPRK. In addition, Wu Zetian's outstanding political skills and the vacancy in the court also forced Wu Zetian to elect some people to assist her. As a close relative of Wu, he is very important to Wu Zetian, but he doesn't want to.

Speaking of Wu Youxiu, I think he is an extraordinary person. In the second year after the establishment of Wu Zetian, her family began to run amok. Even those rich nobles should give them three points, let alone ordinary people. But Wu is quite different. He concealed his identity, put on ordinary clothes and became a fortune teller in a street stall. And other Wu Zetian's family, let alone set up stalls, even have to bring personal guards when they go out.

Although Wu Youxiu was given an official position after Wu Zetian proclaimed himself emperor in the later period, Wu Youxiu was not interested in it. At the age of 30, he was tired of the imperial atmosphere and resigned and retired. So he survived because he didn't fight for it.