Tmall helps to achieve a level of 50
The building challenge can invite friends to help. The level of the friend's shop will directly increase the level of his team.
How can you invite your friends to help us? They are new users of Meow Shop and have not played yet. Then you will directly add 50 levels to your team after you invite.
The above is the reason why someone can help Level 50 in Tmall's Double 11 Building Challenge.