大方廣佛華嚴經隨疏演義鈔 9.39

9.39

疏「上之四門」者，通結上也。所以此中結者，前之四門義已略周。藏和尚立但有前四，今疏順彼且將略畢故。此結之下之六門，復傍收異義，以顯玄奧。

The commentary's words, "The four gates above," constitute a general conclusion to what precedes. The reason it concludes here is that the meaning of the previous four gates is already briefly complete. Master Fazang only established the previous four; now the commentary, following him, temporarily brings them to a close. Below this conclusion, the six gates additionally incorporate other interpretations to manifest the abstruse profundity.