The 58^th International Mathematics Olympiad (IMO 2017) was held in Brazil.  Three out of the six contestants from Macao this year were Pui Ching students.  Among them, Mr. Hou Tin Chao clinched the gold medal for the second year at the competition.   He also won the gold medal at the IMO last year, the first ever gold medal from Macao in 25 years.  Mr. Chao has been the only contestant from Macao to win the gold medal for two consecutive years at the International Mathematics Olympiad.  Many congratulations to Mr. Chao and Pui Ching!