肇論新疏 2.240

2.240

"Understanding blooms" means that having encountered Kumārajīva, his clear understanding opened and unfolded. "Profound dialogue partner" refers to Kumārajīva. From "uncovering and investigating" onward: it means uncovering and investigating the path of prajñā to the utmost; he imagines it is sufficient to exhaust more than half of one's thoughts. The meaning is: having already exhausted more than half; the phrasing is taken from the Xici [of the Yijing], meaning that he understands the sage mind to the utmost limit. From "Thus, whenever" onward: Master Liu always reflects that north and south are separated and distant, and he cannot meet him in person, so his distress and shame are deep.