Exhibit 8.1

List of Principal Subsidiaries and Consolidated Variable Interest Entities

Subsidiaries

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Place of Incorporation

Zhihu Technology (HK) Limited

Hong Kong

Zhizhe Sihai (Beijing) Technology Co., Ltd.

PRC

Beijing Zhihu Network Technology Co., Ltd.

PRC

Wuhan Bofeng Technology Co., Ltd.

PRC

Wuhan Zhihu Network Technology Co., Ltd.

PRC

Consolidated Variable Interest Entities

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Place of Incorporation

Beijing Zhizhe Tianxia Technology Co., Ltd.

PRC

Shanghai Pinzhi Education Technology Co., Ltd.

PRC

Wuhan Xinyue Network Technology Co., Ltd.

PRC

Consolidated Variable Interest Entities’ Subsidiary

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Place of Incorporation

Wuhan Zhibo Wenshuo Technology Co., Ltd.

PRC