Legislative Council president Andrew Leung said he will not run for another term in the December election.
Leung has been a lawmaker since 2004 and has served as Legco president since 2016.
"In recent days, many people, including those in my constituency, asked me if I would run for another term. Frankly, I have discussed it with my family and taken into consideration of my age – which is over 70 – and I've decided not to run for the eighth-term Legco," he told reporters on Monday.
Leung said he has led the council to overcome a lot of challenges in his past nine years as president.
"We led Legco to assist the central and SAR governments to overcome the attacks from the opposition on the governance of the SAR and Legco's operations," he said.
"We have comprehensively amended Legco's rules of procedure to eliminate things like filibustering, behaviour that's anti-China and causes disruption to Hong Kong.
"We've said 'No' to struggles and internal conflicts within the council."
Leung said more than 120 pieces of legislation were passed in this Legco term – a 60 percent increase from the previous term – among them Basic Law Article 23 national security legislation which helped ensure Hong Kong's long-term stability and prosperity.
He also said the council has completed its expansion, allowing all Legco staff "to work under the same roof". He added that the legislature is now equipped with an AI live transcription system to provide high quality services to the public.
The outgoing Legco president said he was very honoured to have served Hong Kong people and the industrial sector which he represents in the past 21 years.
Leung expressed his hope for young talent to participate in the upcoming Legco election, and believes the council will continue to deliver good results in future.
When asked how he will spend his time away from Legco, Leung said he plans to travel with his family.