Szeto Wah (second right), Secretary-General of the joint secretariat of thirteen educational organisations, reading aloud a petition to be handed to the Governor. He is petitioning on behalf of certificated teachers for a higher salary grading. 04MAR73 [Getty Images]

Szeto Wah (second right), Secretary-General of the joint secretariat of thirteen educational organisations, reading aloud a petition to be handed to the Governor. He is petitioning on behalf of certificated teachers for a higher salary grading. 04MAR73 (Photo by E. Cheng/South China Morning Post via Getty Images) — see more

Szeto Wah (second right), Secretary-General of the joint secretariat of thirteen educational organisations, reading aloud a petition to be handed to the Governor. He is petitioning on behalf of certificated teachers for a higher salary grading. 04MAR73 (Photo by E. Cheng/South China Morning Post via Getty Images)