Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional information (Details)

v3.20.1
Commitments and Contingencies - Additional information (Details) - Agreement with Tsinghua University
¥ in Millions
Apr. 27, 2017
CNY (¥)
Long Term Purchase Commitment [Line Items]  
Period covered by the purchase agreement 5 years
Maximum amount of funding support under certain circumstances ¥ 50.0
Amount of funding support to be paid in next three years ¥ 20.0