Why can’t foreigners directly apply for a two-year reunion visa?

Cause of the epidemic. According to the information on the official website of the National Immigration Administration, foreigners under 18 years old and over 60 years old can apply for a reunion visa with a minimum validity of 180 days and a maximum of 3 years. (Residence deadline for persons under 18 years old must not exceed the date when they turn 18), other persons can apply for a reunion visa with a minimum validity of 180 days and a maximum of 2 years. Due to the epidemic, foreign spouses of Chinese citizens have not been able to apply for visas to come to China for nearly two years, resulting in couples Can't be reunited.