Book Time Travel: I Am the Protagonist

Ying Ying woke up at night and found that everything around her was black. Even when she stretched out her hand, there was a black cloud. Everything at home is gone and there is no end in sight. Suddenly, he landed from the floating air and just landed on the ground. A strange library appeared in front of him. There were several people inside who were reading books, but there were no lights on. A few lines of words appeared in front of him, "Welcome to challenge the library and accept the first test."