How to solve EmergencyData app appearing on Huawei Ascend G630?
The Chinese text roughly says, 


  The system has detected a corrupted internal storage, please choose from the following operations:
  
  Factory reset
  
  Reboot to this interface


At this point your best bet is to choose Factory reset (wiping your data in the process), click the confirm button down-right, and hope it does its job. If it doesn't, the storage hardware is likely broken and requires taking the phone to repairs.