陈牧：今四镇兵少，恐不足御守，寡人欲募关中兵万余人诣安西，可乎？先生以为如何？
萧凡：臣以为，今西域服从，虽或时有小盗窃，旧镇兵足以制之。关中常宜充实，以杜安史之萌。自顷西北寇边，凡在丁壮，征行略尽，岂宜更募骁勇，远资荒服！且一万征人行六千馀里，咸给递驮熟食，道次州县，将何以供！秦、陇之西，户口渐少，凉州已往，沙碛悠然，遣彼居人，如何取济？纵令必克，其获几何？傥稽天诛，无乃甚损！请计所用、所得，校其多少，则知利害。昔唐宗之代，兼爱夷、夏，中外乿安；汉武穷兵远征，虽多克获，而中国疲耗。今论帝王之盛德者，皆归唐宗，不归汉武；况邀功不成者，复何足比议乎，愿大王以天宝为鉴。
陈牧：先生之言是也，寡人谨受教。
chen mu：Now，Anzai has very few soldiers，I fear that they will not be able to withstand the enemy，So， I wanted to recruit soldiers to rescue Anzai，Sir，what do you think？
xiao fan：I think，The Western Regions have surrendered to you，Although there were some minor riots，Our army is more than enough to handle things there，Instead， Guanzhong should maintain enough strength to avoid chaos like An Shi，Since the war broke out in the northwest， many soldiers have been recruited in Guanzhong，It is not appropriate to do this repeatedly，Besides， more than 10，000 soldiers went on an expedition to the Western Regions，We don't have enough supplies and transportation is not safe，It is difficult to achieve，Even if we win， we gain little，After calculations， it does not fit，During the reign of Emperor Taizong of Tang， he treated the people and foreigners equally，As a result， there is peace both inside and outside the country，Emperor Wu of the Han Dynasty frequently launched expeditions，Although he won the war， the country became poor and exhausted，Therefore， people admired Emperor Taizong of Tang more than Emperor Wudi of Han，Moreover， the generals just wanted to build meri