Those born in the 1980s adored recording childhood memories with phones and watching beautiful scenery, whereas teenagers and younger customers were keen on videos regarding animes, comics and cute pets.

As an emerging emotional bond, Douyin witnessed 1.76 million new born babies, 180,000 college entrance exams, 380,000 graduations and 7.09 million shares of weddings as avid users chose to record and upload videos of these momentous occasions in their life onto the platform.

Douyin said the platform has enhanced mutual understanding and encouraged positive energy. Videos featuring teachers, nurses, firefighters, traffic police and doctors got the highest number of likes last year and were in the top five categories.

Due to its increasing ubiquity, Douyin is shaping up to be an unavoidable bellwether for the popularity of tourist attractions. The platform saw 6.6 billion "check-ins" at tourist sites across 233 countries and regions, with one video featuring an ancient city wall in Xi'an being played 2.3 billion times.

Industry experts are also now realizing the potential of such platforms. Chinese millennial travelers tend to favor destinations that are considered to be off the beaten path, and the likes of Douyin are normally places where they turn to find inspiration, said Peng Tao, Airbnb's China unit president.

"They appear to be enthusiastic about going to new destinations … and as trend followers, they follow popular routes on social media apps such as Douyin," he said.

Short videos have become one of the fastest-growing media phenomena in China. Typically lasting 15 seconds to a few minutes, video clips on apps like Douyin and rival Kuaishou are consuming around 9 percent of Chinese internet users' time, with the percentage constantly on the rise, according to digital consultancy QuestMobile.

With followers amassed at warp speed for top influencers, businesses are also sensing marketing opportunities. This year more marketing dollars will be given to short videos and livestreaming for better engagement with customers and the creation of compelling content, according to Maggie Wang, president of data marketing technology firm AdMaster.

"For social marketing, it has become more imperative to generate original content to resonate with spectators," she said. "It's highly likely to turn clicks into cash if the contents are to their tastes."