How many chapters did the protagonist's parents appear in Tiandao Library?

1. In chapter 1545, the protagonist Zhang Xuan goes to war with the blade master. Just after the idea in his heart ended, there was a ripple in the space in front of him. Two figures suddenly appeared, a man and a woman. They were two great swordsmen looking for their son, Xing Heyan Meng. They went to another direction and were summoned by Shi Yang, so they came directly. The parents of the protagonist Zhang Xuan are the great swordsman, Xing and Meng respectively.

2. Tiandao Library was published by fantasy novel from the starting point, and the author was a writer of Reading Group.