Although Eunuch Hoi went blind, was he aware the whole time that his original adjutant, Little Gwai, had been replaced by Wai Siu Bo? Despite calling Wai Siu Bo "Little Gwai" and carrying on as is his old flunky were still at his side, I get this feeling that the old eunuch always knew that the real Little Gwai had been murdered by Wai Siu Bo and just maintained the illusion for his own purposes.