According to CoinMeta, pumpfun has announced the expansion of its custom trading pair functionality. Newly issued tokens can now be paired with other tokens on the pumpfun platform, including those that are still in the joint curve trading phase or have already been migrated to pumpswap. When users purchase such new tokens, the transaction will first be completed through the liquidity pool of the paired tokens, and then they can be exchanged for the target token, thereby bringing additional trading demand and liquidity to the existing tokens. pumpfun states that there will be no additional fees for multiple exchange steps, and users holding the new tokens can also receive holder rewards distributed in the form of the paired tokens.