| Jun 2020 | Foreign Venture Capital Investors | 18,494,769 | 1 | 3.64% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                            
                                
                                    |  |  |  | 
                                
                        
                        
                            | May 27, 2020 | Total | 33,368,913 | 1 | 6.57% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                        
                            | May 27, 2020 | Total | 33,368,913 | 1 | 6.57% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                        
                            | May 27, 2020 | Total | 33,368,913 | 1 | 6.57% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                            
                                
                                    |  |  |  | 
                                
                        
                        
                            | Mar 2020 | Foreign Venture Capital Investors | 33,368,913 | 1 | 7.01% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                            
                                
                                    |  |  |  | 
                                
                        
                        
                            | Dec 2019 | Foreign Venture Capital Investors | 33,368,913 | 1 | 7.01% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                            
                                
                                    |  |  |  | 
                                
                        
                        
                            | Sep 2019 | Foreign Venture Capital Investors | 33,368,913 | 1 | 7.01% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                            
                                
                                    |  |  |  | 
                                
                        
                        
                            | Jun 2019 | Foreign Venture Capital Investors | 33,368,913 | 1 | 7.01% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                            
                                
                                    |  |  |  | 
                                
                        
                        
                            | Mar 2019 | Foreign Venture Capital Investors | 33,368,913 | 1 | 7.01% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                            
                                
                                    |  |  |  | 
                                
                        
                        
                            | Dec 2018 | Foreign Venture Capital Investors | 33,368,913 | 1 | 7.01% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                            
                                
                                    |  |  |  | 
                                
                        
                        
                            | Sep 2018 | Foreign Venture Capital Investors | 61,870,569 | 2 | 12.99% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                            
                                
                                    |  |  |  | 
                                
                        
                        
                            | Jun 2018 | Foreign Venture Capital Investors | 61,870,569 | 2 | 12.99% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                            
                                
                                    |  |  |  | 
                                
                        
                        
                            | Mar 2018 | Foreign Venture Capital Investors | 71,807,732 | 2 | 15.08% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                            
                                
                                    |  |  |  | 
                                
                        
                        
                            | Dec 2017 | Foreign Venture Capital Investors | 85,265,747 | 2 | 17.90% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                            
                                
                                    |  |  |  | 
                                
                        
                        
                            | Sep 2017 | Foreign Venture Capital Investors | 94,847,777 | 2 | 19.92% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                            
                                
                                    |  |  |  | 
                                
                        
                        
                            | Jun 2017 | Foreign Venture Capital Investors | 94,847,777 | 2 | 19.92% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                            
                                
                                    |  |  |  | 
                                
                        
                        
                            | Mar 2017 | Foreign Venture Capital Investors | 94,847,777 | 2 | 19.92% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                            
                                
                                    |  |  |  | 
                                
                        
                        
                            | Dec 2016 | Foreign Venture Capital Investors | 94,847,777 | 2 | 19.92% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                            
                                
                                    |  |  |  | 
                                
                        
                        
                            | Sep 2016 | Foreign Venture Capital Investors | 94,847,777 | 2 | 19.92% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                            
                                
                                    |  |  |  | 
                                
                        
                        
                            | Jun 2016 | Foreign Venture Capital Investors | 94,847,777 | 2 | 19.92% | 0 | 0.00% | 0 | 0.00% | 
                    
                        
                            
                                
                                    |  |  |  | 
                                
                        
                        
                            | Mar 2016 | Foreign Venture Capital Investors | 94,999,938 | 2 | 19.95% | 0 | 0.00% | 0 | 0.00% |