Hehehe.. Singapore's Minister Mentor Mr Lee Kuan Yew whether you like his method or what he stands for or not, is one of the best minds in politics and nation builders. He is an elder statesman whose views are often seek by world leaders, past and present.
If he visited PM's wife, you bet he saw something which most of us are not seeing(or are seeing). The author of the article (in the above link) remarked that it was irregular for a foreign leader to meet the wife of a PM who does not hold any office.
Well, just saying what I 'see' from what I read.