Staying in the Immortal Gate and Becoming an Immortal Silently

Zhang Zhibai accidentally traveled to the world of immortal cultivation and successfully joined the Zixia Sect of the Immortal Sect. Fortunately, I got the Tao Book [Heaven Rewards Diligence]: if you practice hard, you can increase your cultivation level. So, He acted steadily, worked hard, and steadily became stronger. Until one day, he suddenly discovered... He stood on top of the world.