Problem classification
1) Elderly Sleep disorder
2) Elderly depression
3) Elderly anxiety disorder
4) Senile Hypochondriasis
5) Elderly mental disorders: suspected surveillance,
6) suspected harm, suspected wife or husband having an affair, behavioral disorders, or various hallucinations, delusions, etc.
Solution
1) Live to be old, learn to be old, study diligently, use the brain scientifically
2) Participate more in social activities and readjust to society
3) Exercise more, listen to more music, and read more
4) Maintain an optimistic and tolerant attitude
5) Cultivate various hobbies