The Opium War

What was the aftermath of the Opium War and its impact on China?

Some say it actually favored China to have HK ceded.

I think the immediate effect were it caused the death and suffering to millions from opium addiction and sabataged the Chinese economy which was trading at profit with Europe so made the China powerful enough to interfere with European policy in other Asian countries.

I agree, what the British did was just sick, they stand guilty of poisoning a great country.  How terrible that such a great people as the British became mere drug-pushing thugs and in so doing destroyed the great Chinese nation.

"How did China prosper from this?  It seems to lean more to the British..."

China was closed to the rest of the world before the opium war.

as a result of the opium war, five trade ports were open and hong kong was ceded.

these trade ports such as shanghai and hong kong later became prosper and important commercial cities.

during the chinese civil war, cultural revolution, and ww2, hk became the shelter for chinese capitals, refugees, and businessmen. it also served as a base for anti-manchu revolutionists, giving birth to the republic.