Why our airdrop training camp FB has no cost, not to mention FB, the last pizza had no cost either. Many people may say, stop bragging here, how can it be cost-free, the fact is; we have been playing unisat, starting from last April when we taught students to play brc20 inscriptions. At that time, the tutorial was still about playing sats, and I also taught them to buy and sell ordi on the chain, and I asked them to keep playing unisat points, with the goal of going for the unisat airdrop itself, but I didn’t expect that pizza and FB would come in the middle!