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Business acquisition - Summary of purchase price as of the date of jiangsu five star acquisition (Detail) - Jiangsu Five Star [Member]
Apr. 30, 2020
CNY (¥)
Summary of purchase price as of the date of acquisition [Line Items]  
Conversion of loan and assuming of debt ¥ 1,024,946,000
Fair value of previously held equity interests 1,274,257,000
Total ¥ 2,299,203,000