Paraquat is not a tropical fruit in China.  It is one of the most widely used herbicides (weed killer) used worldwide.  It is popular because it quickly kills plant tissue on contact and is very inexpensive.  Its famous for a number of reasons, it’s banned from use in the Europe since 2004 but remains used in USA and other parts of the world. 
Sarojeni V. Rengam, at Pesticide Action Network, has called it the most toxic herbicide marketed globally since WWII. 
Guangdong, The Canton Province, is China’s richest province and the most …