心知肚明

to be well aware

heart / mind / intention / center / core / CL:顆|颗[ke1],個|个[ge4]

to know / to be aware

Ming Dynasty (1368-1644) / surname Ming / Ming (c. 2000 BC), fourth of the legendary Flame Emperors, 炎帝[Yan2 di4] descended from Shennong 神農|神农[Shen2 nong2] Farmer God

bright / opposite: dark 暗[an4] / (of meaning) clear / to understand / next / public or open / wise / generic term for a sacrifice to the gods

tripe

belly