"Bitong" is a money fund sales service provided by An Teng Fund Sales (Shenzhen) Co., Ltd. (hereinafter referred to as An Teng Company) or Shenzhen Qianhai Weizhong Bank Co., Ltd. (hereinafter referred to as Weizhong Bank). Change orders support functions such as transfer-in, transfer-out and payment. Transfer-in: transfer funds from WeChat change or bank card to transfer-out account: transfer funds from transfer-out account to WeChat change or bank card (only funds transferred from bank card can be transferred out); Payment: You can use a change card when paying by WeChat. Change Pass is a monetary fund product launched by Tencent's subsidiaries in cooperation with a number of financial institutions, which can be used for payment. Users can directly use the money in the change account for consumption, such as transferring money, issuing red envelopes, scanning code payment, and returning credit cards. [6] At the same time, when the funds in the change account are not used, the income can be automatically obtained. Bank cards are transferred in and out free of charge, which is convenient for temporary transfer of funds to earn income; You can also set up automatic transfer of salary cards, automatic transfer of monthly pocket money and automatic generation of bills. Users can open or use the change-sign service by opening WeChat (version 8.0. 16) on iPhone 13 mobile phone i0S 15.0. Users can transfer WeChat change or bank debit card funds to the change link, and funds transferred from bank cards can be transferred back to bank cards or change for free. Funds transferred from change can only be transferred back to change, and there is no handling fee for transfer. Service mode: the fund sales organization provides the sales service of money fund products, and the fund company provides the operation and management service of money fund. Users transfer funds to the card, that is, buy their own money fund products and enjoy the money fund income. See the subscription page for the product names of the corresponding sales organizations and monetary funds. In the process of fund sales, fund sales agencies provide investors with services such as fund product promotion, account opening, subscription, subscription, redemption and transaction information inquiry. Sales organizations do not directly provide fund products and do not participate in product investment and operation. As the provider of fund products, fund companies manage fund operation activities such as fund product raising, fund asset investment and income distribution according to the relevant requirements of laws and regulations. When users buy related money fund products by changing coupons, they need to carefully read the fund contract, prospectus and other product-related materials, carefully understand the investment risks of the products, fully consider their own risk tolerance, and make investment decisions independently. I hope my answer can help you. Thank you!