according to the mobile official website information, this traffic means the traffic dedicated to the apps supported by Caiyun.

caiyun directional traffic means that when using and caiyun APP, priority will be given to deducting and caiyun directional traffic, and general traffic will only be used when the directional traffic is used up. As long as it does not exceed the ordered directional traffic package, the used traffic will not be deducted from the package traffic package and other general traffic packages.

Apps supported by directional traffic with Caiyun: Migu Video, Iqiyi, Tencent Video, Mango TV, Youku, Watermelon, Netease Cloud Music, Today Headline, Tik Tok, Volcano Video, PP Video, Sina Weibo, Baidu, Baidu Map, Baidu Post Bar, Good-looking Video, Mobile Assistant, Baidu Translation, Aauto Quicker, Netease Games, etc.