First of all,Perhaps the number of people has been familiar to Huyền Chip story. Actually, to  acquire that  achievement, she used a tool something that became famous around the  World known as Couchsurfing.               https://www.couchsurfing.com

Couchsurfing, just like it is called, a couch is a kind of chair referring to home or somewhere for coming by  and surfing that means moving to somewhere. Therefore Couchsurfing refers to the practice of moving from one friend’s house to another or sleeping in whatever spare space is available. It is so-called in simple ways like hospitality and homestay service. Let’s take a look is how it works in a link below.