A 9-year-old boy has gone viral in China after showing off his lightning-fast mental arithmetic skills at an abacus calculation competition in Zhengzhou, central China's Henan Province.⁣ ⁣ Sitting calmly with his arms folded, the young contestant wrote down the correct answers almost the instant the questions were read out. His incredible speed and confidence ultimately earned him the championship title in the primary school category.⁣ ⁣ #China #MentalMath #Abacus #Math #AmazingSkills #ChinaMoment⁣