Why did the young singer's gloomy calculation save Fei Xuan's life?

Bleak prevented him from uncovering divination symbols.

The TV series suggests that if Fei Xuan's divination is really uncovered for the last time, Fei Xuan will pay the price of his life for watching his fate. Bleak didn't let Fei Xuan explain divination, so Fei Xuan thanked Bleak.

The play is adapted from the novel Song of the Teenager of the same name. It tells the story that Lei Wuji, a fledgling young Xia, mistakenly entered Xueluo Villa on his way to Xue Yue, the largest city in the Jianghu, and was involved in a Jianghu incident by mistake.