Convertible Senior Notes (Tables)

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Schedule of Carrying Amount of Notes

The carrying amount of the Notes as of December 31, 2020 and 2021 were as follows:

	As of December 31, 2020		As of December 31, 2021
	RMB		RMB		US$
Liability component:
Principal		17,953,650		13,402,897		2,103,207
Less: unamortized debt discount		1,274,874		750,725		117,805
Net carrying amount		16,678,776		12,652,172		1,985,402
Equity component:
Carrying amount		1,744,219		1,793,011		281,363