1. Choose high-quality goods: Choose goods with good quality, good reputation and high demand, so that the survival time in Pinduoduo may be longer, because these goods are easier to be bought by users.

2. Reasonable price: Keep the commodity price within a reasonable range of the market, which will neither affect the purchase too high nor harm the interests of the merchants too low, so as to attract more users to buy, thus prolonging the survival time of commodities in Pinduoduo. Black five categories are mainly functional products, such as scar cream, hemorrhoid instrument, whitening, slimming, moxibustion supplies and so on.