At the Beginning of Journey to the West, You Travel Through Time and Become Marshal Tianpeng.

When a programmer traveled through Journey to the West and became a canopy marshal, he only received a simulation system at the beginning, and he had to program whatever he wanted... Lack of skills? Automatic upgrades are arranged at your convenience. Lack of elixirs? Automatic alchemy is everywhere. Looking at my palace, it seems that I still lack a Bronze Bird Tower...