1. On social networks, such as WeChat and QQ, search for keywords such as "recovering mooncake coupons in Songnan" or "trading mooncake coupons in Songnan " and other keywords, you may find some information about related merchants or private traders.
2. On some second-hand trading platforms, such as idle fish, turn, etc., search for keywords such as "Songnan recycling mooncake coupons" or "Songnan mooncake coupons trading", you may also find some relevant information.
3. Alternatively, you can consult your neighborhood mooncake coupon outlets or supermarkets and ask them if they recycle mooncake coupons or know of any recycling points.
It is important to note that when trading mooncake coupons, you must pay attention to the legality and security to avoid encountering fraud or other risks. At the same time, the trading market and price of mooncake coupons will be affected by a variety of factors, including market supply and demand, brand, quality, face value, etc., so be sure to understand the market situation and carefully assess the price before trading.