Why does Taobao 3ce have two official flagship stores?

Taobao 3ce is the official flagship store of Tmall in China and overseas. According to the relevant information of the query, the bound company entities are different, one is a domestic company and the other is a foreign company. Tmall and Tmall International can be regarded as two platforms. Tmall's domestic goods belong to the trade type, and Tmall International belongs to the cross-border retail type. But a platform can only have one official flagship store.