| 3 May 2019 
 | Withdrawal of Listing of Shares on the Hong Kong Stock Exchange | 
    
                            
                              | 
 | 
                            
                              | 21 Mar 2019 at 11:30 am (or immediately after the
 conclusion or adjournment
 of the Court Meeting)
 | Extraordinary General Meeting | 
                            
                              | 
 | 
                            
                              | 21 Mar 2019 at 11:00 am | Court Meeting (as defined in the composite scheme document dated 25 February 2019 jointly by Petrus HK Co Limited and the Company) | 
                            
                              | 
 | 
                            
                              | 14 Mar to 21 Mar 2019 (both days inclusive)
 | Closure of Register of Members (Court Meeting and  Extraordinary General Meeting) | 
                            
                              | 
 |