40 million Jin. Ton is a Chinese character, pronounced as dūn, and expressed as t with letters. It is often used as a unit of mathematical quality, and it is often used to measure the weight of larger items in life. 1 ton =2000 Jin = 1000 Jin (kg), so 20,000 tons of rice equals 40 million Jin. Jin, also called Jin, is the unit of measurement of China's weight (mass). Jin was used as the unit of measurement in Qin Dynasty, and it was stipulated that 1 jin was equal to 16.