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Summary of Significant Accounting Policies (Details 4)
Sep. 30, 2017
Mar. 31, 2017
Sep. 30, 2016
RMB:US      
Period/year end exchange rate 6.6574 6.8905 6.6679
Period/annual average exchange rate 6.7672 6.7291 6.5984
HKD:US      
Period/year end exchange rate 7.7705 7.7705 7.7547
Period/annual average exchange rate 7.7588 7.7588 7.7582