Kayou is an innovative brand of card culture. Kayou is a registered trademark brand.

Card Tour Competition: Hero League Championship (HNC) is a routine and professional TCG event held by Card Tour.

The theme of the competition revolves around the four key words of "parent-child, social interaction, puzzle and competition". Players are gathered all over the country in the form of novice competition, monthly competition, SP competition, city tour and city open competition, and the top 64 players in the country are selected. Finally, the national championship is held to compete for the national champion.