Children perform during a grand evening gala marking the 70th founding anniversary of the People's Republic of China in Beijing, capital of China, Oct 1, 2019. [Photo/China Daily]

Zhang, a two-time Oscar nominee who directed the stunning opening and closing ceremonies of the 2008 Beijing Olympic Games, added that such gatherings had become popular, particularly among younger Chinese people.

"The crowd gathering was used as a part of the evening gala and was a great way to celebrate the day with fun and spontaneity," he said. "It highlighted the lively and jubilant atmosphere of the new era."

The Tuesday evening gala created quite a buzz on social media. Thousands commented online. One person posted: "It's a great show for the country's birthday." Another lauded the music: "The song Me and My Motherland is actually contagious and fills me with emotion."

The song Me and My Motherland was written by lyricist Zhang Li and composer Qing Yongcheng in 1985 and was first performed by Chinese singer Li Guyi. With its smooth melody and catchy lyrics, it has been popular with Chinese audiences for generations.