The 27th Hong Kong Industrial Products Exhibtion

The picture probably captured the opening ceremony moment of the exhibition.  The towering pagoda of the Tiger Balm booth can be seen at the background behind the crowd. The show was running from Nov 28, 1969 - Jan 5, 1970 and took place at the Hung Hom Reclamation Area at the time.  Picture source: CMA

Date picture taken
1969