East Buy [HKG: 1797] dived 18.5% as of 10 a.m. in Hong Kong today after the Chinese e-commerce firm said its star host Dong Yuhui resigned and gained control of his livestreaming channel. The followers of Dong's independent livestreaming firm Walk With Hui rose by over 100,000, while those of East Buy fell by about 10,000 as of 11.50 p.m. yesterday.