Bangladesh fielded first after losing the toss but the visiting side were unable to take advantage.
The home side used six bowlers but it was the part-time spinners - captain Mominul Haque and his deputy Nasir Hossain – who troubled the Hong Kong batsmen the most.
Right-arm pacer Abul Hasan Raju struck the first blow removing opening batsman Anshuman Rath for seven in the third over.
Left-arm spinner Mominul and off-spinner Nasir then caused havoc sharing six wickets between themselves. Momiul bowled four overs, picked up three wickets conceding 11 runs while Nasir bagged as many in his quota of 10 overs, giving away 18 runs.
The combined effort saw Bangladesh bundle Hong Kong out for 125 in 35.1 overs. Babar Hayat was the top-scorer with 37 batting at No 3.
The Bangladesh batsmen complemented the bowlers' display as opener Saif Hasan struck an unbeaten 57 off 47. The home side reached their destination in 16.1 overs.
Bangladesh lost two wickets - opener Azmir Ahmed (15) and Mominul (21) - but were rarely troubled as Saif, along with Nazmul Hossain Shanto, posted 41 unbroken runs for the third wicket. Saif hammered nine boundaries and one over boundary while Nazmul was not out on 24 with three fours. Bangladesh will face Nepal on Tuesday in their second game while Pakistan take on Hong Kong.
Nepal, in their first game on Monday at the other ground at SKICS, lost to Pakistan by six wickets. Nepal were invited to bat first. They scored 180/9, riding on opener Sunil Dhamala’s 43. Pakistan left-arm pacer Ghulam Mudassar picked up five wickets.
In reply, Pakistan chased down their target in 45.1 overs losing four wickets. Opener Imam-ul-Haq registered the first century of the tournament, scoring an undefeated 105 with the help of nine boundaries.
Meanwhile in Group A, India recorded a 35-run victory over Sri Lanka in Chittagong’s Zahur Ahmed Chowdhury Stadium while Afghanistan secured a mammoth 155-run win against Malaysia at MA Aziz Stadium.
The India-Sri Lanka tie was a high-scoring affair with the former making 288/9. India captain Baba Aparajith was the highest scorer with exactly 100. In pursuit of the target, the Lankans posted 253 before being dismissed. Aswin Crist and Kanishk Seth shared six wickets.
The Afghanis in the meantime, dominated Malaysia throughout the game with the former scoring 284/7. The Malaysians were then bowled out in 45.5 overs with 129 on the board.
Afghanistan top-order batsman Ihsan Janat topped the innings with 108 before getting retired hurt. Derek Michael Duraisingam took four wickets for Nepal.
Sri Lanka will face Afghanistan on Tuesday while India will lock horns with Malaysia.
126/2 in 16.1 overs (Saif 57*, Shanto 24) beat Hong Kong
125 in 35.1 overs (Mominul 3/11, Nasir 3/18) by eight wickets
183/4 in 45.1 overs (Imam 105*, Lamichhane 2/32) beat Nepal
180/9 (Dhamala 43, Mudassar 5/26) by six wickets
253 in 48.2 overs (Asalanka 68, Jayasuriya 64) lost to India
288/9 (Aparajith 100, Vihari 56) by 35 runs
129 in 45.5 overs (Shafiq 36, Virandeep 32) lost to Afghanistan
284/7 (Ihsanullah 108, Munir 90) by 155 runs