Group 1 - The article promotes a referral program where individuals can invite friends to open personal pension accounts and receive rewards based on their friends' contributions [2][3] - The program runs from April 1, 2025, to April 30, 2025, allowing participants to invite up to 200 friends, with potential rewards reaching up to 2000 yuan in benefits [3] - Additional tiered rewards are available for inviting a certain number of friends, with the highest reward being 6400 CCE, along with various vouchers and benefits [4]