McCartney told the Emperor to receive his gifts but the emperor doesn't understand what he is saying and says McCartney is rude since he is not kowtowing, therefore the Chinese don't accept the English's gifts.
Second Opium War
FIRE!
The British want to trade Opium with the Chinese but the emperor says no. The peasants also want the Opium because it is highly addictive but the emperor still says no because it is damaging china.
Hong Kong Handover
Hong Kong Handover Day
When the Chinese refused to trade Opium with the British, they decided to use their boat to shoot the dock and invade it. Soon after, China lost the battle and the British forced China to give 4 docks to them for trade, a bunch of cash and Hong Kong too. Yet the emperor said no.
When the emperor said no he sent out these 2 guys called Yishan and Yang Fang to destroy the British. China had the most soldiers but the British had the more trained soldiers, therefore the British won the battle again and the emperor fired Yang Fang because he said that if the British leave then they can trade Opium.
Since the British had conquered China and had took over the Yangtze river, the food could not be processed across China, therefore leading to the Chinese having to sign a contract called the Treaty Of Nanking contract. The terms were that China had to give 5 docks to the British for trade including the island of Hong Kong which now leads to the Hong Kong handover.