Concentrations and Litigation (Details)	6 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Concentrations and Litigation (Details) [Line Items]
Concentration risk, percentage	10.00%	10.00%
Supplies [Member]
Concentrations and Litigation (Details) [Line Items]
Concentration risk, percentage	10.00%	10.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

No definition available.

Name:	cga_ConcentrationRiskPercentage
Namespace Prefix:	cga_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration