Living on a Deserted Island, I Seize the Opportunity

A retired veteran encountered a shipwreck and lived on a desert island at the company's annual ship meeting after his professional career. Based on his own experience of desert island life, issues such as food, beauties, beasts, indigenous civilizations, etc. Came one after another. Can he crack the mysterious triangular forbidden area? Is it a prehistoric civilization or an alien civilization? Can he return to the real world? Please stay tuned.