In the current market situation, although Bitcoin has rebounded from 80000 to 90000 and sentiment has improved, it is still difficult to determine whether the overall trend has reversed and returned to a bull market. It is still possible to hit a new low again, and it is difficult to achieve high certainty in making money with contracts, second tier, newbie, meme dogs, and even Binance Alpha may lose money. So, what do we choose to do? Conclusion: Brushing Perp DEX trading volume/point airdrops is the most cost-effective way to invest and make money. 1. The advantage of relatively low transaction costs, such as Lighter's launch of zero transaction fees for pending orders, has resulted in a relatively high conversion rate (transaction volume/cost of funds) for fund airdrops. 2. The high valuation of the PERP DEX track implies high-value airdrops; 3. High certainty and clear quantifiability, clearly converting trading volume, holding time, and LP contributions into airdrop value with equal proportions of points. Compared to content creation/verbal manipulation that is difficult to quantify, subtle manipulation, and top KOLs occupying the list, the certainty is higher. Based on the current market heat, trading volume, airdrop expectations, fee structure, and brushing efficiency, the top 5 most cost-effective Perp DEX currently are: 1. @Lighter_xyz ， The main consideration is the zero transaction fee model, which has the lowest transaction costs and ranks first in terms of transaction volume. 2. @pacifica_fi ， From the perspective of higher returns as one enters earlier, many other DEs are already in the mid to late stages, while Pacifica is still in the early participant dividend stage, and entering through invitation codes can earn higher return multiples; 3. @edgeX_exchange ， A relatively strong community and meme culture, belonging to a different path, may have strong explosive power, but Open Season points are already in the final stage, it seems to end on December 3rd. Some points are not obtained through community activities other than brushing volume, such as invitations, ambassador programs, etc. How to brush it? That is, strategy 1. For the brushing of the lowest cost/maximum transaction volume on a single platform, @ Lighter_xyz is preferred, and zero fees for Maker Order orders are preferred to minimize Taker Order orders. Then invite and brush on @ pacifica_fi. 2. Two platforms are used for hedging, with the main focus on brushing volume on Lighter and opening reverse hedging orders on Pacifica. Requires focus and time to proficiently operate and improve skills. Pay attention to your position, increase your volume and receive airdrops. Don't rely on contracts to make money, as it can easily backfire.