On April 6, 2021，Didi Taxi announced to start its custom car assembly project for network taxi service together with BYD.

In November 2019, Didi Taxi and BYD established a  automotive technology company , called wonderful trip ( Hangzhou ) automotive technology company. In this company, BYD hold 65% of stocks, Didi hold another 35 , which means BYD is the controlling shareholder.

The two companies then teamed up to launch the custom ride-hailing D1 in November 2020.

According to the report, Didi's plan is likely to be a further exploration of customized online ride-hailing along with experience of D1.