Unfortunately, my experience with CJS has been less than satisfactory. I joined the platform in July after being invited to a stock trading group where a certain Mr. Gu Shengyi was present. Regrettably, my investment in indices on the CJS platform led to a loss, and my account became inaccessible. Withdrawals were impossible, and the guided index trading by Mr. Gu Shengyi resulted in substantial losses and liquidation.