NCT's Chinese Secret Tips (2020)

In both series the members are learning about a new language and the culture from that country. Members act as students, and get the lessons from another member/members who comes from said country, teaching them about their native language.

In both series the members are learning about a new language and the culture from that country. They're also playing games along the way.

In both series the members are in a school based concept learning about a new language and the culture from that country.