Many pilots are of the view that if its within limits 'we WILL make an approach' - But their are times when one has to say NO.
Sure 99.9% of the time its OK and you arrive in the bar in time for tea and medals - but we are paid to balance the risk against comercial pressure, and ultimatley I am responsible for the aircraft and sometimes would rather err on the safe option and divert, and not risk being one of the 0.01% who dont get to the bar.
In the above conditions I would listen carefully to the approach & tower freqs. and set very clear bottom lines re. windshear if I were to make an approach.
As already said - HKG must rank as one of the worlds worst airports for windshear. The Aerad booklet devotes several pages to it.
Anyone who has flown in/out of there during strong southerlies will know.