Note 8 - Long-term Investments (Details Textual) ¥ in Thousands, $ in Thousands	Sep. 30, 2020 USD ($)	Sep. 30, 2020 CNY (¥)	Jul. 31, 2020
Local Chain Xi’an [Member]
Equity Securities without Readily Determinable Fair Value, Amount	$ 30	¥ 250
Equity Securities without Readily Determinable Fair Value, Percent	4.90%	4.90%
Business Opportunity Chain [Member]
Equity Securities without Readily Determinable Fair Value, Amount	$ 30	¥ 190
Equity Securities without Readily Determinable Fair Value, Percent	19.00%	19.00%
ChinaNet Chuang Tou [Member]
Equity Securities without Readily Determinable Fair Value, Percent			19.00%
Shenzhen Mingshan [Member]
Equity Securities without Readily Determinable Fair Value, Percent			23.18%