Region faces air and water pollution, deforestation, illegal fishing, wildlife trafficking and a growing plastic trash crisis.
A steep drop in November adds to China's economic and trade war concerns.
The fishermen have begun entering several nations’ Exclusive Economic Zones, damaging local livelihoods.
The government has put debt curbs on hold to fight an economic slump.
Moscow has claimed a leading role in ensuring China's energy security.
An outcry followed reports that residents were forced to burn furniture for heat.
Record steel output raises concern over a sudden drop.