After the trip ended, is the chef hat still useful?

It’s useless. "Travel Chuan Chuan" is a healing casual travel game, full of heart-warming plots and an awesome gameplay system. You can also enjoy the fun of cooking Chuan Chuan during the journey. Buddha Jumps over the Wall is one of the tasks. Among them, the chef The hat is a specific prop that can only be used in specific mission levels and is useless after passing it.