There are two examples of why people in Hong Kong protested for:
The first one started in 2003, when more than half a million people demonstrated to block the government's plan to impose stringent national security laws known as Article 23.
The next big protest was in 2012. A 15-year-old boy led the fight against having a national curriculum introduced in schools. Joshua Wong later became the poster boy for Hong Kong's most famous pro-democracy protests, the Umbrella movement.
Answer: Rhubard farmers trick the plant into acting like seeds by showing them acts of there previous stages such as placing soil on them so the think they are back in the ground because they have no visual sense.