at him with a blank expression, his eyes were quite frightening."Uncle, what are you looking at me like that for" Xu Junlou asked, a little afraid."What position do you hold" Xu Changqing asked back."...ne-fifth, or even one-fourth, of their harvest as tax.Merchants can make a profit of thirty copper coins from their business, but they only need to pay one coin as tax. Moreover, they try every means...