Academic:
IEEE Xplore
IEEE Computer Science
arXiv.org
ORCID
DBLP
ScholarGPS
Computer and Information Science Papers CiteSeer Publications ResearchIndex
Netlib , a site with a plethora of useful mathematical software
Tools:
CTEX
MATLAB and Simulink for Technical Computing
Google
Google Scholar
Universitys of HK:
The University of Hong Kong
The Chinese University of Hong Kong
The Hong Kong University of Science & Technology
The Hong Kong Polytechnic University
City University of Hong Kong
Hong Kong Baptist University
Traffic / 交通:
HK MTR /港铁
HK City Bus / 城巴
HK KMB / 九巴
Hong Kong International Airport / 香港国际机场
Cathay Pacific Airways / 国泰航空
China Eastern Airlines / 东方航空
China Southern Airlines / 南方航空
CentaMap / 中原地图
China Travel Service (Hong Kong) Limited / 中国旅行社