Tāmen zài Qínhuái Hé de huàfǎng shàng chī le wǎnfàn.
They had dinner on a decorated boat on the Qinhuai River.
Tips
culture
画舫 are part of classic Chinese leisure scenery, especially on the Qinhuai 秦淮 in Nanjing and West Lake 西湖 in Hangzhou. In Ming–Qing literature they were also floating restaurants and party venues for the literati.