What is the word before light in Mi Fei's cursive post?

"? It's just disgusting! ”,"? Who is "light" has different opinions. For example, Hunan Fine Arts Publishing House added the word "Yan" under "Gong" in the annotation of "Mi Fei Chi Yu", and almost all other posts used "? "replacement. As for the word "Qiao", I think we should add the word "Yan". See page 440 of Ci Hai 1989. Adding a word "edge" under "bridge" is the original word of argument. But from the analysis of handwriting and strokes, the word may be "Joan" or "Gong" plus one word. However, in the order of strokes, the word "Gong" is written first, the second stroke is left-handed, and the third stroke is left-handed, and a word is added below, which is obviously "Qiao" and "Yan", but because Mi Fei uses the pen too fast, one of them is too fast and too long, followed by a horizontal hook. Liu Yong

1799 temporary crops are only temporary and cannot be distinguished. The word "debate" is used because Mi Fei, Zhang Dian, Huai Su, Gao Xian and Bian Guang are listed (tentative). There is a real person arguing about light. "Biography of Song Monks" Volume 30: "Shi Guang, the word Dengfeng, surnamed Wu. Yongjia people are also. Sun Ye, the son of a historian in the Tang Dynasty, is the grandson of Jing. The young family was shaved at Taoshan Temple. ... longer than Cao Li. " Ye Li of Zhao Zong summoned him, and he wrote a calligraphy in front of the imperial couch. His calligraphy is vigorous and powerful, which is appreciated by people. Zhao Zong was given a purple robe, hence the name "cursive monk". Being friends with the poet Luo Yin, Luo has a poem "Send the Master of Debate Light". There is a volume of "Debate on the Poems of the Master of Light", which has long been lost.