1. Walk about 250 meters from the south exit of Beijing South Railway Station to Beijing South Railway Station.
2. Take Daxing Line of Metro Line 4 and arrive at Jiaomen West Station after 2 stops.
3. Take the subway 10 line and arrive at Panjiayuan Station after 8 stops.
4. Walk about 2. 1 km and arrive at Jingkelong Supermarket at the south gate of Songyuli.
The nearest subway line is 10, but it's a long way.
What is the specific production method?