Ren Huan
Emperor Mingzong initially gave Zhang the honorary title of advisor to the Crown Prince — even though there was no crown prince at that time. The chancellor Ren Huan was impressed by Zhang's abilities, and therefore had Zhang made his deputy in his role as the director of the three financial agencies (i.e., the directorate of taxation, the directorate of budget, and the director of salt and iron monopolies). However, Zhang died shortly after.