“It’s so good,” he said, as he dug into the bowl, standing in front of the restaurant entrance. Onlookers crowded around filming him and taking photos.

But the “douzhi’er,” a fermented soybean drink that’s slightly sour and gray-green in color, made the Nvidia CEO wince.

Videos of his reaction were trending on Weibo, the Chinese social media platform, Friday afternoon.

The drink is a Beijing classic, but only liked by some.

Huang then quickly bought a sweet drink from Chinese beverage chain Mixue Bingcheng to recover.

Huang was touring the Nanluoguxiang area in Beijing’s eastern district, known for its distinctive traditional low-rise homes called hutongs.

The area is a mix of shops, restaurants and also home to some city residents. Many of the houses had been demolished across the years, but Beijing had preserved a small section.

Jensen Huang became the world’s seventh-richest person Monday, overtaking LVMH CEO Bernard Arnault and his family as Nvidia shares jumped amid a larger tech stock surge.

Huang’s estimated net worth reached $165.8 billion Monday afternoon, leapfrogging past Arnault’s estimated net worth of $164.6 billion, according to Forbes.