Nearly 460,000 people participated in an online quiz on the history of the special Vietnam-Laos relations after nine weeks to August 15, the organising board of the contest said at its meeting in Hanoi on August 16.
As many as 79,567 people participated in an online quiz on the special Vietnam-Laos relations during its seventh week, from 4pm on July 25 to 3pm on August 1.