but his mind received no notification from the system about a check-in."It seems that I need to delve deep into the heart of Yuantian Secret Repository to check in." Jun Xiaoyao thought inwardly."Go!...leaf seems to hold a world in flux!Tuo Ba Yu was so shocked that his whole body trembled.He naturally had no idea that it was the World Tree.It's a greatness that perhaps even gods wouldn't possess.Bu...