HANOI, Sept. 15 (Xinhua) — The 20th "Chinese Bridge" Chinese Proficiency Competition for Foreign College Students concluded its final round of the northern and central Vietnam section on Wednesday. Organized by the Chinese Embassy in Vietnam and held by the Confucius Institute at Hanoi University, the competition took place via video link amid COVID-19 concerns across the country. A total of 23 students from 19 universities in northern and central Vietnam competed in the final round, which was divided into three parts, including a themed speech, a talent show and an impromptu speech. Nguyen Thi Ha Ngan from the University…