毛根戒指

 https://www.youtube.com/watch?v=QbFEVqG05sY

https://www.youtube.com/watch?v=oOcCDO4S97c

https://www.youtube.com/watch?v=YE1UjFiqXI4

https://www.youtube.com/watch?v=emjkPg6EVvY

https://www.youtube.com/watch?v=h0J3KRFYUsY