This was un-planned, but because I chanced upon the clip when randomly browsing through the clips in Facebook (however, it disappeared when I returned from its pause).
It was made so easy to understand and quite easy to remember 😃 - the explanation is like an animated clip which one can follow and visualise. Well done, the creator!
Also, just learned it is: 国家级非物质文化遗产代表性项目名录 LINK
