ZTO Express Cayman : VOLUNTARY ANNOUNCEMENT ANNOUNCEMENT DATE OF FIRST QUARTER FINANCIAL RESULTS

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.

Under our weighted voting rights structure, our share capital comprises Class A ordinary shares and Class B ordinary shares. Each Class A ordinary share entitles the holder to exercise one vote, and each Class B ordinary share entitles the holder to exercise 10 votes, respectively, on all matters that require a shareholder's vote. Shareholders and prospective investors should be aware of the potential risks of investing in a company with a weighted voting rights structure. Our American depositary shares, each representing one of our Class A ordinary shares, are listed on the New York Stock Exchange in the United States under the symbol ZTO.

ZTO Express (Cayman) Inc.

中通快遞（開曼）有限公司

(A company controlled through weighted voting rights and incorporated in the Cayman Islands with limited liability)

(Stock Code: 2057)

VOLUNTARY ANNOUNCEMENT

ANNOUNCEMENT DATE OF FIRST QUARTER FINANCIAL RESULTS

This announcement is made by ZTO Express (Cayman) Inc. (the "Company") on a voluntary basis. The Company will release its unaudited financial results for the first quarter ended March 31, 2021, on Thursday, May 20, 2021 (Beijing time), before the trading hours of the Hong Kong Stock Exchange.

The Company's management team will host an earnings conference call at 8:30 P.M. U.S. Eastern Time on Wednesday, May 19, 2021, which is 8:30 A.M. Beijing Time on Thursday, May 20, 2021.

Dial-in details for the earnings conference call are as follows:

United States: 1-888-317-6003

Hong Kong: 852-5808-1995

Singapore: 800-120-5863

Mainland China: 4001-206-115

International: 1-412-317-6061

Passcode: 8671970

A replay of the conference call may be accessible through May 26, 2021 by dialing the following numbers:

United States: 1-877-344-7529

International: 1-412-317-0088

Canada: 855-669-9658

Passcode: 10155754

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A live and archived webcast of the conference call will also be available at the Company's investor relations website at http://zto.investorroom.com.

By order of the Board

ZTO Express (Cayman) Inc.

Meisong LAI

Chairman

Hong Kong, April 27, 2021

As at the date of this announcement, the board of directors of the Company comprises Mr. Meisong LAI as the chairman, Mr. Jianfa LAI and Mr. Jilei WANG as executive directors, Mr. Xing LIU and Mr. Zheng LIU as non-executive directors, Mr. Frank Zhen WEI, Mr. Qin Charles HUANG, Mr. Herman YU and Mr. Tsun-Ming (Daniel) KAO as the independent non-executive directors.

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