@fuyuyang Please know, there is no requirement for becoming an Associate of (ISC)² other than passing the (ISC)² exam of your choice. Depending on which certification you are interested in, determines the amount of years you have to hold the Associate of (ISC)² status. If you would like to discuss this further, please send me a direct message and I will be happy to provide you with details on the Associate program.
Best Regards,
Amanda Vance
avance@isc2.org