As “KOL” is an English acronym, it has no Chinese characters. The term's meaning comes directly from its English source words:
Together, they form “Key Opinion Leader”—a person whose opinion is a key factor in leading the decisions of others. To understand the broader context, it's helpful to break down the closely related Chinese term 网红 (wǎnghóng), which means “internet celebrity”:
The immense power of KOLs in China stems from a unique intersection of culture and technology.
KOLs are a dominant force in daily digital life and business strategy.