Fans arrive at My Dinh Stadium for the show, which starts at 7:30 p.m.
Many fans came in black and pink costumes to fit in the show's theme, and were disappointed that the raincoats ruined the moment.
Rain started to recede at 6:20 p.m. as bigger crowds showed up at the stadium.
Blackpink was formed in 2016 and consists of four members: Jennie, Lisa, Jisoo and Rosé. The group has since achieved international success with numerous hits like "Ddu-Du Ddu-du," "Kill This Love" and "Pink Venom."
Their world tour Born Pink, which started late last year, has grossed about $163.8 million so far, with more than 900,000 tickets sold. This makes Born Pink the highest grossing girl group tour of all time, surpassing the previous record set by the Spice Girls ($78.2 million).
The group announced last month that they would hold two shows at Hanoi’s My Dinh National Stadium on July 29 and 30, marking the conclusion of their world tour.