Pakatan Harapan chairman Datuk Seri Anwar Ibrahim said Maria Chin Abdullah had served admirably as the Petaling Jaya MP but in politics, changes had to be made so that newer faces like GE15 candidate, Lee Chean Chung, could be groomed to take over while the seniors act as advisors.br br The opposition leader was addressing supporters at an event in Taman Dato Harun on Wednesday (Nov 16).