A resident signs in a street campaign in support of national security legislation for Hong Kong Special Administrative Region (HKSAR) in Hong Kong, south China, May 23, 2020. (Xinhua/Li Gang)

Residents attend a street campaign in support of national security legislation for Hong Kong Special Administrative Region (HKSAR) in Hong Kong, south China, May 23, 2020. (Xinhua/Li Gang)

A resident signs in a street campaign in support of national security legislation for Hong Kong Special Administrative Region (HKSAR) in Hong Kong, south China, May 23, 2020. (Xinhua/Lo Ping Fai)

A resident signs in a street campaign in support of national security legislation for Hong Kong Special Administrative Region (HKSAR) in Hong Kong, south China, May 23, 2020. (Xinhua/Wu Xiaochu)

A resident signs in a street campaign in support of national security legislation for Hong Kong Special Administrative Region (HKSAR) in Hong Kong, south China, May 23, 2020. (Xinhua/Wu Xiaochu)

A resident signs in a street campaign in support of national security legislation for Hong Kong Special Administrative Region (HKSAR) in Hong Kong, south China, May 23, 2020. (Xinhua/Wu Xiaochu)

A resident signs in a street campaign in support of national security legislation for Hong Kong Special Administrative Region (HKSAR) in Hong Kong, south China, May 23, 2020. (Xinhua/Wu Xiaochu)

A resident signs in a street campaign in support of national security legislation for Hong Kong Special Administrative Region (HKSAR) in Hong Kong, south China, May 23, 2020. (Xinhua/Wu Xiaochu)

A resident signs in a street campaign in support of national security legislation for Hong Kong Special Administrative Region (HKSAR) in Hong Kong, south China, May 23, 2020. (Xinhua/Wu Xiaochu)

A resident signs in a street campaign in support of national security legislation for Hong Kong Special Administrative Region (HKSAR) in Hong Kong, south China, May 23, 2020. (Xinhua/Wu Xiaochu)

A resident signs in a street campaign in support of national security legislation for Hong Kong Special Administrative Region (HKSAR) in Hong Kong, south China, May 23, 2020. (Xinhua/Wu Xiaochu)

People from all walks of life attend a campaign in support of national security legislation for Hong Kong Special Administrative Region (HKSAR) in Hong Kong, south China, May 24, 2020. (Xinhua/Lui Siu Wai)

Chan Kin-por, a member of the Legislative Council (LegCo) of China's Hong Kong Special Administrative Region (HKSAR), speaks during a campaign in support of national security legislation for HKSAR in Hong Kong, south China, May 24, 2020. (Xinhua/Lui Siu Wai)

People from all walks of life attend a campaign in support of national security legislation for Hong Kong Special Administrative Region (HKSAR) in Hong Kong, south China, May 24, 2020. (Xinhua/Lui Siu Wai)

Starry Lee Wai-king, a member of the Legislative Council (LegCo) of China's Hong Kong Special Administrative Region (HKSAR), speaks during a campaign in support of national security legislation for HKSAR in Hong Kong, south China, May 24, 2020. (Xinhua/Lui Siu Wai)