Living on an Isolated Island, I Became the King of the Island

After getting drunk, Lin Yu accidentally traveled to an isolated island. Just when Lin Yu fell into despair, he was surprised to find that he actually had a system. Lin Yu ignited a fire of hope in his heart, and by chance, he successfully activated this system that he had high hopes for. However, once the system was activated, the first task assigned to him was to conquer the elves from another world. "Just let me conquer the elves. Just give me an elf ball!" Looking at the tasks on the system interface, Lin Yu had a complicated expression and couldn't help but complain. ———— This book is also called "You cannot become the king of the island if you are not a good trainer of the gym owner"