Useful Webs :
Webs of Universities in Hong Kong
The Chinese University Of Hong Kong
http://www.cuhk.edu.hk/
Dept of Math: https://www.math.cuhk.edu.hk
Mathematically Inspiring Materials:
https://hlma.hanglung.com/en/resource-library
The University Of Science and Technology
https://www.ust.hk/
Dept of Math: https://www.math.ust.hk
The University Of Hong Kong
http://www.hku.hk
Dept of Math: http://www.math.hku.hk/
The City University Of Hong Kong
https://www.cityu.edu.hk
The Hong Kong Polytechnic University
http://www.polyu.edu.hk/
The Hong Kong Baptist University
http://www.hkbu.edu.hk/
The Lingnan University Of Hong Kong
https://www.ln.edu.hk/cht/
The Open University Of Hong Kong
http://www.ouhk.edu.hk/
The Education University Of Hong Kong
http://www.eduhk.hk/
Mathematics Calculators
Desmos
https://www.desmos.com
Powerful Multi-functional Mathematical Tools
http://www.numberempire.com/
Differential Calculus Tool
http://www.derivative-calculator.net/
Integral Calculus Tool
http://www.integral-calculator.com/
Basic Matrix Calculator
http://www.bluebit.gr/matrix-calculator/
Wolfram Alpha
http://www.wolframalpha.com/
Wolfram World
http://scienceworld.wolfram.com/
Online Learning Materials
Brilliant
https://brilliant.org
HKALE Pure Mathematics Past Papers
https://www.youtube.com/playlist?list=PLzDe9mOi1K8os36AdSf64ouFT_iKbQfSZ
Advanced Calculus
http://www.youtube.com/playlist?list=PLE7F8F33E161D1425
Introductory Physics, Faculty of Sci, HKU
https://www.youtube.com/watch?v=sdCnfCQgtzc&list=PLs41xVEMB2j2J3l_FvZvE4QnVduTr4c6v
Secondary Mathematics Posts
https://johnmayhk.wordpress.com
Other Useful Sources
Legal Reference System
http://legalref.judiciary.hk/lrs/common/ju/judgment.jsp
https://www.elegislation.gov.hk
Chinese Dictionary
http://humanum.arts.cuhk.edu.hk/Lexis/Canton
http://dict.revised.moe.edu.tw/cbdic/
Free e-Books download
https://www.pdfdrive.com
Google Translate
https://translate.google.com.hk/?hl=zh-TW