Generally speaking, "one-to-many" special account financing means that multiple customers collect money in one account and hand it over to the professional team of the fund company. According to the content and format criteria of fund "one-to-many" contracts published by China Securities Regulatory Commission, the number of individual "one-to-many" accounts. ETF-linked fund refers to an ETF that invests most of the fund assets in tracking the same target index (referred to as target ETF), closely tracks the performance of the target index, pursues the minimization of tracking deviation and tracking error, and adopts open operation.