Yanghunzi & Shudaizi volunteer to join their school's Learn Chinese Through Time Machine Project.

When they study at the Peking Academy of Colloquial Chinese, they always discover some USEFUL Chinese words from their COOL Chinese friends that can never be explained in text book or dictionary with the following context.

Shudaizi is very curious about where these weird words come from, while Yanghunzi is just craving for adventure. The school plans to use this profit driven project to attract tourists ( They will probably be put in a cage aftewards ).

The time machine will send both of them to the past, where they can have a perfect blend-in with the local crowd - all ages, all places and sizes.

Welcome to The Peking Academy of Colloqiual Chinese's great lessons...