He was diagnosed with an eye disease at the age of 30 and eventually lost his sight. In 2013, he got the guide dog, which was 2 years old at the time.
He stressed the importance of both "bringing in" and "going global," and called upon the country to pursue the Belt and Road Initiative as a priority.
He said there were no immediate plans to activate the Defense Production Act, which authorizes presidents to take extraordinary action to force American industry to ramp up production of equipment needed for national security.
He said the Trump administration's restrictions on the easy flow of people between the US and China would be "the most disastrous decoupling of all".
He said the vehicles only use fuel when driving at a speed of over 40 kph, when they are automatically charging the electric batteries.
He was chosen as one of the preservers of the provincial intangible cultural heritage in Gansu last year, and has shared his skills with more than 10 people including his son, Sun Yacheng, who sees his father as a great inventor.
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He spent six years finding out information about the martyrs, including which army these soldiers belonged to. He visited old soldiers and military museums.
He urged people not to under-estimate the scale of that task.
He said the answer is clear to the question of whether to work together for regional cooperation or to be self-isolated, and he called for joint efforts to make a bright future for the Asia-Pacific economy.
He said work related to the zones has seen major progress. A large number of innovative results at the institutional level are being promoted nationwide, making the zones a testing ground for comprehensive deepening of reform.