What advantages did British subjects receive in China under the 1858 treaty?

According to the Anglo-Chinese treatise of 1858, Britain received the right to navigate the Yantsy River, and British sovereignty over Hong Kong was also established. This is about the economic and political benefits for the British. It should also be noted that in relation to English subjects in China, the hieroglyph for “barbarian” was no longer used (it was the Europeans who were called barbarians in the Celestial Empire).