Group 1 - The investment platform's model of "mailing gold for double recharge to investment accounts" poses multiple legal risks and safety hazards [3] - According to Chinese postal regulations, mailing precious metals like gold without permission is illegal and can lead to administrative penalties [3] - The promise of high returns with low risk contradicts basic economic principles and may constitute illegal fundraising under Chinese law [3] Group 2 - There are operational risks associated with mailing gold, including loss, damage, or substitution during transit [4] - Many of these investment platforms lack the necessary financial business licenses and are not regulated under banking or securities laws [4] - If such platforms fail or shut down, investors may lose both their physical gold and the promised returns, highlighting the importance of reporting suspicious activities to authorities [4]