HSI round can be divided into HSI buying round and HSI selling round. Take the HSI subscription card as an example. If the holding expires, if the relevant asset price (settlement price) is higher than the exercise price (redemption price) of the subscription card, the subscription card will be exercised and the investor can collect the residual value. If the difference between the asset price and the exercise price is greater, the difference will be higher, which means that the profit will be greater. On the contrary, if the price (settlement price) of the relevant assets is lower than the exercise price on the maturity date, the subscription certificate (subscription round) will be invalid and the investor will lose the investment amount. Wolun has a concept called "the point of peace". The significance of peace lies in determining at what level investors can make profits; Its calculation method is equal to the subscription card price multiplied by the share conversion ratio, plus the exercise price, and the related expenses required also have an impact on the return.

As far as HSI subscription cards are concerned, the final settlement price of Hang Seng Index futures contracts is calculated according to the maturity date of the relevant subscription cards. "Index futures contracts" are determined in accordance with Regulation 0 12 of the Hong Kong Futures Exchange on trading stock index futures contracts and the contract details of Hang Seng Index Futures.

Note that Wolun stopped trading not on the maturity date, but three trading days before the maturity date.