"Oh? Take a seat."
Behind the spacious desk, the world-renowned great scholar smiled and gestured towards an empty chair in the room.
For this student, whom he highly esteemed, Mr. Zhengyang evidently had more patience.
He smiled and said, "To have you come ask in the dead of the night, it must indeed be a difficult question. Tell me, what is it?"
Lu Cheng didn't decline and sat down first. Then, he respectfully asked his mentor,
"May I ask, sir, how can 'the heart is principle' be resolved?"
"Can 'the extension of innate knowledge' be practiced?"
"How should one view 'the unity of knowledge and action'?"
He didn't beat around the bush but bluntly threw out his questions without further explanation.
Because he knew his mentor didn't need it.
Just these three enigmatic terms, if heard by the common folk, would be completely baffling, utterly incomprehensible.
