What on earth is TikTok? We spent a day with a TikTok star

To better understand how TikTok works in domestic and international markets, our producer Yang Yang went to visit TikTok stars with millions of followers - one is a 16-year-old who initially moved to Los Angeles to develop an acting career; the other, coming up in the next episode, is a family of toddler triplets living on the outskirt of Zhuhai, a city in Southern China.