Shenzhen, Zhuhai are paying social security for 5 years does not count in Guangzhou to pay 10 years

Not really. The number of years of contributions is the cumulative number of years of contributions, not in Zhuhai to pay social security for 5 years, even in Guangzhou to pay 10 years. Social insurance (SocialInsurance) is a social and economic system that provides income or compensation for the population that is incapacitated, temporarily out of work, or has suffered a loss due to health reasons.