C431 Second brother with no moral integrity

In the next moment, Shu Xi's voice suddenly rose as he asked, "You, your mental calculations are actually this powerful?"

"?" Mo Weinong could only laugh dryly.

It wasn't because her mental strength was that great, but because ? The calculations of this dynasty were too poor.

She knew that over 2000 years ago, China already had an arithmetic method similar to the multiplication table