Rú Jiā
Confucian School of Thought, founded by Confucius 孔子[Kǒng Zǐ] (551-479 BC) and Mencius 孟子[Mèng Zǐ] (c. 372-c. 289 BC)
kòng zi
gap
unoccupied space or time
fig. gap
loophole
Kǒng zǐ
Confucius (551-479 BC), Chinese thinker and social philosopher, also known as 孔夫子[Kong3 fu1 zi3]