The coin zk has caused a lot of controversy due to the airdrop. As an investment product, we are not afraid of controversy, but we are afraid of no traffic and no popularity. Controversy means high popularity, and those non-controversial coins will not attract much attention after they are launched. It is expected that zk will fluctuate greatly after it is launched. Cautious investors should pay attention to the risks. It is an ideal target for investors with high risk preferences.