How much does it cost to spend a day and a night in Quanzhou and come back early the next day and go to Fangte?

From Quanzhou to Xiamen for one day and one night, there is little difference between the round-trip fare and the bullet train cost. I suggest you take the bullet train faster. You can go to Xiamen first in the morning to go to the ferry and Gulangyu Island, which will take about half a day. You can stroll around Zhongshan Street at noon, play in Baicheng of Xiamen University in the afternoon, and return to Quanzhou in Fangte the next day in the evening. The cost is probably enough in 5 yuan, but don't be greedy to buy things, otherwise it will not be enough. It's summer, so I suggest you take sun protection measures and drink plenty of water. Have a good time, and be sure to be safe.