The font used in the ByteDance logo is a font called "PingFang SC Regular". The reasons why this font was selected as the ByteDance logo are explained and expanded as follows:

1. Simple and modern: "PingFang SC Regular" font has simple and modern characteristics, suitable for expressing ByteDance Image as a technology company. The lines of this font are simple and smooth, and the fonts are even and clear, giving people an intuitive feeling.

2. Strong Chinese readability: As a company headquartered in China, ByteDance needs to consider the readability of Chinese users. The "PingFang SC Regular" font is excellent in the performance of Chinese characters. The fonts are stretched and natural, making it clear and easy to read.

3. Trademark uniqueness: The Bytedance logo is the trademark of Bytedance. Using a unique font can help Bytedance form a unique feature in its brand recognition and enhance its reputation in the minds of users. Recognition and memory.

4. Font copyright and licensing: When using fonts, copyright and licensing issues are factors that need to be considered. ByteDance most likely used the "PingFang SC Regular" font with legal authorization or purchase, ensuring the legal use of the font.

In short, ByteDance chose the "PingFang SC Regular" font as the font of the logo in order to show the company's technological image, ensure the readability of Chinese characters, and create a unique trademark identity. It also considered Copyright and licensing issues. Such a choice will help improve ByteDance’s brand image and recognition.