The 2018 Colloquium on International Law was convened under the theme of Sustainable Connectivity: Go Green, Deal Clean and Talk Peace. It was graced with the presence of highly esteemed speakers and well attended by audiences coming from Hong Kong as well as Belgium, Iran, Israel, Macao, Mainland China, Nepal, New Zealand, the Philippines, Russia, United Kingdom, Unites States of America, Venezuela, and Zimbabwe. While most attendees are law practitioners, high-ranking government officials, academics, entrepreneurs and diplomats were also on the floor, unanimously affirming the practicality and relevancy of the Colloquium. With an array of distinguished speakers sharing their invaluable insights at the Colloquium, it is our hope that, this Proceedings shall be beneficial to furthering studies and research work of international law in Asia and beyond.