Public safety is the base of national security and social stability and is important for ensuring national modernization development. The Chinese public safety technology has obtained obvious progress owing to the high attention of government, especially the support of National Medium and Long-term Plan for Science and Technology Development (2006-2020). This paper describes the Chinese public safety technology development, chances and challenges. Besides, the technology used and achievements obtained by Macao Special Administrative Region (SAR) after Typhoon Hato are presented.

Currently Macao SAR is well-developed, which was handed over to Mainland China 20 years ago. However, this has led to the rapid increase of transportaions, which has in turn caused the serious traffic problem in Macao. In this paper, the traffic problem is analyzed, which includes the situation of buses, motorcycles, and taxes. The current situation of light rail, roundabout, excavation, and cross-sea-bridge is introduced and its influence on the traffic is discussed. Solutions to the traffic problem is proposed regarding to city plan and smart city strategies. Moreover, the future transportation development of Macao is also studied.

Developing smart buildings is of great importance to the sustainable and healthy development of cities. In this paper, we firstly provide some definitions and features of smart buildings. Then, we describe the building characteristics of Macao. Finally, we provide some suggestions for smart building development in Macao, e.g., strengthening cyber security protection for building management systems, speeding up the deployment of 5G networks, and developing energy conservation and environmental protection technologies for buildings.

Marine economy is a new area of the world economy. Macao is a geographic-narrow city with dense people. How to develop, maintain and realize the marine economy has always been concerned. This paper analyzes the marine economy development situation in Guangdong-Hong Kong-Macao Greater Bay Area, and studies the opportunities and challenges faced by the marine economy development in Macao. In order to achieve economic growth, regional coordination, industrial optimization and financial development, we follow the vision of innovative, coordinated, green, open and shared development to propose a high-quality development path of marine economy based on the opportunities and challenges for Macao to accelerate the implementation of marine economy sustainable development.

The 85 km² of sea area that the Chinese central government has empowered the government of the Macao Special Administrative Region to manage provides a strong support for the moderately development of Macao's economy. This paper discusses the importance of the sea to Macao's moderately diversified economic development in terms of expanding development space, providing resources, supporting industries, and promoting cooperation. It also analyzes the development foundation of Macao's related industries, the policy advantages of the central government in supporting Macao's development of the marine industries, Macao's own "free economy", and the "bridge" advantages of Comunidade dos Países de Língua Portuguesa. Based on this, the paper puts forward a strategic path to promote the diversified development of Macao's economy through the sea:to connect with national development strategy and the local social and economic development needs, to make two plans for the development of Macao's sea area and industry; to establish the marine cooperation platform with three regions:Guangdong-Hong Kong-Macao Greater Bay Area, southern marine economic circle urban agglomeration, and Comunidade dos Países de Língua Portuguesa through regional linkage.

Shortage of talents in Macao has caused great constraints on Macao's deep participation in the construction of Guangdong-Hong Kong-Macao Greater Bay Area. In the article we discusse the need for Macao to participate in and contribute to the construction of the Guangdong-Hong Kong-Macao Greater Bay Area and its new requirements for Macao's talent operation. We analyze the main causes of the shortage, including endogenous shortage, poor structure, conservative talent immigration policies, etc. Then we comb the efforts made by Macao SAR government to solve this problem. Finally, we put forward five suggestions, namely, formulating a long-term talent development plan, establishing a talent sharing mechanism in the Greater Bay Area, optimizing the introduction system of professionals, increasing local talent cultivation and overseas talent return, and reforming talent operation institutions and mechanisms.