The agreement marks a substantive step in environmental-protection co-operation between China and Russia.

I hope monitoring cross-border rivers is just a beginning of the two countries' co-operation on environmental protection. China and Russia need to jointly develop comprehensive environmental protection.

If in the past, in terms of environmental protection, we were very passive ... now there has been a U-turn.

If environmental protection efforts continue to lag behind economic growth, pollution will become even more rampant.

What we are aiming for is achieving coordinated economic social development and environmental protection while putting emphasis on environmental protection.

The worst environmental pollution in the country is coming, highlighted by frequent occurrence of major pollution incidents.