Hong Kong Post small packet air mail non-trackable delivery time to Kuching Sarawak Malaysia

Hong Kong post small packet airmail untracked delivery time from Rm, 8F, Tower 2, Century Gateway, 83 Heung Sze Wuid Road, Tuen Mun New Territories Hong Kong to Kuching, Sarawak, Malaysia. The item was sent on the 9 October 2016 and arrived on the 28 November 2016 which is 50 days and almost 2 months. This is the first time i have waited for the longest shipment from Hong Kong which usually in the past takes only 2 or 3 weeks time. I believe that this is not the problem from Hong Kong post but it could be PosMalaysia is collecting and keeping them first for quite sometimes and then deliver all items at once. This is backed by an evidence as the pos Malaysia delivery so many packets at once. So they are actually holding them for a period of time before making delivery. Probably because it is a free shipping non-insured package so speed of delivery is non of their priority.