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Variable Interest Entity (Details Textual) | Dec. 04, 2017 | Jun. 08, 2017
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Shanxi Xifeng Investment Co., Ltd. [Member] |  |
Variable Interest Entity (Textual) |  |
Percentage of equity interest | 4.0625% |
Shanghai Dianniu [Member] | Minimum [Member] |  |
Variable Interest Entity (Textual) |  |
Percentage of equity interest |  | 89.20%
Shanghai Dianniu [Member] | Maximum [Member] |  |
Variable Interest Entity (Textual) |  |
Percentage of equity interest |  | 93.20%

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- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
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