There is a silent newsreel film on Youtube covering the visit to Pakistan of Chinese PM Chou En-Lai, probably in 1964, in which he is welcomed by President Ayub Khan:
At 1.14 mins in the film he is seen being introduced by President Ayub Khan to Mr N.A. Faruqui. Mr Faruqui is also briefly seen a little later seated on a chair in a room.
At this link I have extracted three relevant screen shots from it.
Towards the end of the film, starting at 2.33 mins, Chou En-Lai visits the site where Islamabad was to be built and plants a tree there.
I believe the same tree planting photo is on Flickr at this link.
In this Flickr photo Mr Faruqui, wearing a dark-coloured cap, is standing next to Z.A. Bhutto as they watch the tree planting.