溯流而上

jì xù sù liú ér shàng gān jú yuán duō le qǐ lai

继续溯流而上，柑橘园多了起来。

Further up the river, more orange groves can be seen.

chéng chuán yán hé sù liú ér shàng

乘船沿河溯流而上

take a boat up the river