8.Though man has begun to study vision at beginning of Christianera, many branches of vision, such as bio-vision, its sense process etc, were still puzzled.
9.The author thinks that Xu Shen went to the capital to hold the position of Tai Wei Nan Ge and sacrifice in Jian Chu 8(christianera 83) after he had done the Ju Xiao Lian.
10.Analyses about the reconstructed sequences indicate that: 1) from the beginning of Christianera, climate decreased with the cooling rate of 0.20℃/10 2a, and around 500A. D. temperature declined to the lowest of this epoch, about 1℃ lower than that of 1951~1980A.