Mao Collection, Upper Volume Radical: Heart (xīn) 忉 Kangxi strokes: 6 Page 375, Entry 08 Pronounced dao. The appearance of being worried or sorrowful. As stated in the Book of Odes (Shijing), the heart is filled with endless sorrow. Also, according to Buddhist texts, the Trayastrimsa Heaven consists of eight heavens in each of the four cardinal directions, with the Heaven of Indra in the center, totaling thirty-three heavens.