Abstract: Because of the frequent occurrence of "war disaster", in the government soldiers, there appeared the phenomenon of "Breaking Limbs to Avoid Military Service", in other words, that is self-handicapped. In order to completely eradicate this phenomenon, Emperor Taizong of Tang Dynasty issued the law that those who harm themselves in the future should be punished according to the law, and still be subject to conscripting and military service. The historians specially added the special annotation of "Blessed Hands and Feet", and pushed the phenomenon of "Breaking Limbs to Avoid Military Service" to the period of Emperor Yang in the Sui Dynasty. The annotation was added by Wang Pu to the supplementary editor of the hundred volumes of Tang Hui Yao, which was intended to cover up the phenomenon of the government soldiers in Zhenguan period. From the law of "self injurious person" to the annotation of "Breaking Limbs to Avoid Military Service", and then to the elegant name of "Blessing Hands and Feet", it not only indirectly reveals the historical face of "Breaking Limbs to Avoid Military Service" when the government soldiers could not bear the heavy conscripting under the "war disaster" in the Late Sui Dynasty and Early Tang Dynasty, but also reflects the dilemma of "concealment" and "metaphor" in "Writing History" of historians in the traditional period.