According to Peking Treaty, what restrictions were imposed on China by England?

1)       The Second Opium War started in the year 1856. The war came to an end with the defeat of the Manchu Emperor by signing the treaty of Peking.
2)       According to this treaty, another group of six Chinese ports was opened for the foreign traders. The business of opium was given permission.
3)       The foreign envoys were allowed to stay in Peking.

4)       The Christian missionaries were given security and freedom of spreading their religious.