Cannot resolve the collation conflict between "Chinese_PRC_CI_AS" and "Latin1_General_CI_AI" in the equal to operation

Hi, Guys:

I got this error "Cannot resolve the collation conflict between "Chinese_PRC_CI_AS" and "SQL_Latin1_General_CP1_CI_AS" in the equal to operation."

when I run this query

select *
from DimEmployee  
inner join  #tempString on DimEmployee.EmployeeNationalIDAlternateKey = #tempString.UserID