From Connected People, Connected Things, to Connected Intelligence

People tend to overestimate what can be done in one year and to underestimate what can be done in ten years. To get prepared, people have started to ask what the next generation would look like while 5G mobile cellular network is still at its first year of commercial deployment. In this paper, we first take a look back to see what 5G has achieved from its inception up to the year 2020, and then we have an outlook towards another 10 years ahead to the year 2030 where 6G is expected to be enrolled to the market. While 5G gradually opens up the curtain of internet of everything and brings vertical transform to change the society, 6G is believed to open a new era of ‘Internet of Intelligence’ with connected people, connected things, and connected intelligence, solving human challenges in many aspects and helping perfect the world we all live in.