On Feb 28 2018, Gan Zhang was invited to give a speech on Khundkar Memorial Lecture in Department of Chemistry of Dhaka University. The speech was entitled ‘Fate of POPs in Asia and Nexus’. The Khundkar lecture was setup in memory of Professor Mukarram Hussain Khundkar who was the father of chemistry in Pakistan and Bangladesh. This was its 31st Lecture. It is interesting that Professor Orjan Gustafsson who is going to visit our group made the 26th Lecture of the kind Nov 4 2013. What a small world!