I am from Hong Kong and I know how to read these simplified Chinese :) (Though in Hong Kong we use traditional Chinese but I am also able to understand the simplified Chinese)

<b>Top left</b>
The "Falun gong" is Buddhist and remember that "Falun gong" is great. When you face danger the "Falun gong" can save your life.

<i>Comment</i>: "Falun gong" is a Chinese spiritual practice. However the Communist Party does not allow other beliefs to challenge their ruling, so they started to ban "Falun gong" by sending people who practise "Falun gong" to jail and torture them. The Communist Party claims that it is a cult. Actually, the "Falun gong" people always come to Hong Kong and spread their message, because Hong Kong is not under the governance of China and we have the freedom of speech.
See this: https://en.wikipedia.org/wiki/Falun_Gong

<b>Bottom left</b>
Today the weather is not good, please look at the "Nine Commentaries on the Communist Party". Quitting the communist party is a serious matter and not a joke, quit it to ensure safety.

<i>Comment</i>: Since the "Falun gong" is banned by China, the people who practise "Falun gong" hate the Communist Party very much. The "Nine Commentaries on the Communist Party" is a famous document which criticize the Communist Party. 

<b>Right hand side</b>
Climb over the walls to see the world.

<i>Comment</i>: Internet censorship is very strict in the China. People can't even use Facebook or Google. So it provides some methods (probably VPN and Proxy) to break the wall.

<b>Conclusion</b>
The one who printed the words on the banknote is from "Falun gong" and he is against the Communist Party. He cannot spread the word easily in China, so he printed on this banknote to spread the message.