Maybe your network is not very good. You can try to change the network. Shan Zhinan, the northern Yan of Bohai Sea, the eye of the island, a new vision of the port city, is a video information platform jointly created by Hebei Radio and Television Network and Qinhuangdao Wande Technology, which is a free online service launched by Qinhuangdao Radio and Television Network. You can also check it by following their official WeChat account.