The three-week-long Greater Bay Area online shopping festival, which started on Sept 2, was wrapped up amid the climax of the gala. The festival featured 800,000 merchants from the region, nearly 300,000 brands and 13 million products on e-commerce platforms.

The shopping festival helped revive the retail markets in Guangdong, Hong Kong and Macao, sending consumers from across the country on a shopping spree. Data show that between Sept 2 and 21, transactions totaled over 100 billion yuan.

The festival was welcomed by Hong Kong retailers, as it opened a bigger market and platform, thereby raising the profile of Hong Kong's homegrown brands.

Ma Pak Leung, a nearly 200-year-old traditional Chinese medicine brand, recorded a 14 percent increase in aggregate turnover.

"The integration of development in the Bay Area and the burgeoning of wellness medicine on the Chinese mainland will create tremendous room for improvement for local brands, including us," said Chu Ka-yuk, Ma Pak Leung's marketing and sales manager.

The festival will also allow more people to get to know the brand's legacy, pedigree and culture, he added.