Persian businessman Abdul married into a merchant's home in Chang'an, but fell into a quagmire of business war due to loopholes in the accounting books. He relied on Arabic numerals and double-entry accounting to create a tamper-proof accounting system; he used mathematical wisdom to build a price index model and launched a pricing power game with the Sogdian business group. See how this son-in-law uses numbers as a blade to reshape the business order of the Silk Road and write his own legendary business path.
