12. A method of chatting with virtual pet, applied to a device comprising a processor coupled to a memory storing instructions for execution by the processor, the method comprising: receiving, in the device, a sentence in natural language and an ID of a pet owner; processing, in the device, the sentence through natural language comprehension, obtaining language characteristics of the pet owner from a pet owner language information base according to the ID of the pet owner, and generating an answer in natural language based on reasoning knowledge, a result of natural language comprehension , and the language characteristics of the pet owner; wherein the language characteristics of the pet owner include language tips and expression manners.
16. The method of claim 12 , further comprising: after processing the sentence in natural language through natural language comprehension, obtaining new language characteristics of the pet owner based on the result of natural language comprehension, and storing the new language characteristics.