At present, the membership growth system includes six stages, which are indicated by VIP 1 to VIP6 respectively. The specific growth stage depends on the "growth value" of members, and the corresponding table is as follows:
Member growth stage, VIP 1, VIP2, VIP3, VIP4, VIP5, VIP6, growth value, 0,600,1800,3600,6000, 10800.