Clinical Efficacy Evaluation and Central Mechanism Study on acupuncture in Treating Long COVID-19 syndrome Fatigue

INTERVENTION: acupuncture group:acupuncture treatment;sham‐acupuncture group:sham‐acupuncture treatment;Healthy control group:None; CONDITION: Long COVID‐19 syndrome Fatigue PRIMARY OUTCOME: Checklist for individual strength(CIS);FMRI evaluation indicators;MRS evaluation indicators; SECONDARY OUTCOME: Somatic and psychological health report,SPHERE;Short form‐36 health survey,SF‐36; INCLUSION CRITERIA: Inclusion criteria for subjects of long COVID‐19 syndrome: (1) Patients who meet the diagnostic criteria of Chinese and Western medicine and voluntarily participate in the trial and cooperate; (2) Right‐handed; (3) Age 18‐65 years old, with a course of disease of = 2 months; (4) No relevant traditional Chinese and western medicine treatment, sedative, hypnotic, Melatonin, antidepressant and other psychotropic drugs were taken in the past month; (5) Severe primary diseases such as heart, brain, kidney, and hematopoietic system, as well as mental illness; (6) Able to accurately understand the meaning of various scales and sign informed consent forms. (7) Not participating in other ongoing clinical studies. Inclusion criteria for healthy subjects: (1) Age 18‐65 years old, right‐handed; (2) No functional or organic diseases were found through physical examination; (3) Those who have not taken any medication for at least 15 days before en