Fishermen in north and east China are back in business, enjoying a successful and plentiful opening day of fishing after a four-month summer fishing moratorium ended on Tuesday.

In Qingdao City of east China's Shandong Province, the first batch of fishing boats returned to a bustling harbor in the early morning of Wednesday, fully loaded with fresh seafood including cutlassfishes and silver pomfret.

All of the fishing boats enjoyed a successful catch bringing back about 4,000 kilograms to the harbor.

The price of fish was also stable, with a slight decline compared to last year.

"The fish will grow bigger and bigger, but the price may not go very high this year. Basically, it will keep the current level, which has a slight decline compared with last year," said Xu Lintuan, a local fisherman.

In Tangshan City of north China's Hebei Province, fishermen were also busy with their first catch of the fishing season on Tuesday night.

Satisfied with their hauls, in terms of both quality and quantity, they worked through the night to unload and sort their catch to quickly transfer them to markets in different cities.

"We got almost 3,000 jin (1,500 kilograms) of octopus, which is very rare in the last fifteen years," said Ge Yongqing, a local fisherman.

The summer fishing ban lasting for four months is part of China's efforts to promote sustainable marine fishery development and improve marine ecology.