Subsequent Event (Details) - USD ($)	1 Months Ended		2 Months Ended
	Nov. 30, 2021	Oct. 31, 2021	Nov. 30, 2021	Sep. 30, 2021	Mar. 05, 2015
Subsequent Event [Line Items]
Number of ordinary shares authorized for grant		7,345		7,369,767	4,140,945
Vesting rights		One-third of the restricted shares will vest and be released from the restrictions on each yearly anniversary from the date of the agreement. Upon termination of the certain directors’ service with the Group for any reason, any shares that are outstanding and not yet vested will be immediately forfeited.
Two Thousand Seventeen Equity Incentive Plan | Management and Employees
Subsequent Event [Line Items]
Options granted contractual term	4 years		5 years
Subsequent Event | Blueprint Medicines Corporation
Subsequent Event [Line Items]
Milestone payments upfront fee	$ 25,000
Milestone payable upon achievement of specified clinical regulatory sales milestone	590,000		$ 590,000
Subsequent Event | Karuna Therapeutics, Inc
Subsequent Event [Line Items]
Milestone payments upfront fee	35,000
Milestone payable upon achievement of specified clinical regulatory sales milestone	$ 152,000		$ 152,000
Subsequent Event | Management and Employees
Subsequent Event [Line Items]
Number of shares authorized for grant	36,640	41,415	36,640
Subsequent Event | Management and Employees | Restricted Shares
Subsequent Event [Line Items]
Shares vested	0.25		0.2
Subsequent Event | Two Thousand Seventeen Equity Incentive Plan | Management and Employees
Subsequent Event [Line Items]
Options granted	92,700		60,066
Options granted contractual term	10 years		10 years
Exercise price of options	$ 104.42
Subsequent Event | Two Thousand Seventeen Equity Incentive Plan | Management and Employees | Minimum
Subsequent Event [Line Items]
Exercise price of options			$ 102.75
Subsequent Event | Two Thousand Seventeen Equity Incentive Plan | Management and Employees | Maximum
Subsequent Event [Line Items]
Exercise price of options			$ 104.42
Subsequent Event | Two Thousand Seventeen Equity Incentive Plan | Management and Employees | Vesting anniversary year after the grant date
Subsequent Event [Line Items]
Vesting percentage	25.00%		20.00%