The wounds often become ulcerated, the skin is repeatedly affected and patients suffer lifelong pain.
The work projected Lan's team to the finals of the 2018 China-US Young Maker Competition, where they secured second place.
There are more than 20 pairs of sister cities between California and China, while both sides are actively committed to green development and have been playing positive roles in addressing climate change.
The writer of the essay, Yang Xiayu, is a sixth grader at No 2 experimental school affiliated to Shanghai Normal University in Putuo district, and his mother is a chief nurse of orthopedics at No 905 military hospital of the Navy, People's Liberation Army.
There are many TCM practitioners in the area, and imported Chinese patented medicines are particularly popular, because such medicines are manufactured based on time-honored prescriptions that have proved to be very effective, Liew said.
Their story has become a hot topic online, viewed more than 130 million times on social media site Weibo by Thursday. One user comments: "Salute their mother. Her children make the country proud."
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Their neighbor, an unmarried man in his 30s, noticed Song's frequent absences, and one evening as the girl played in the yard, he gave her candies and chocolate to lure her into his rented home.
The world's biggest oilseed processor confirmed on Wednesday that China has essentially stopped buying US supplies of soybeans amid the brewing China-US trade war.
Their online sales volumes increased 75 percent year-on-year in 2016, with sales revenue up 103 percent compared with the same period of previous year.
The world is undergoing a new round of globalization with great changes as well as great adjustment, where the economic and social development of all countries is becoming closely connected, global governance and the reform of the international order is accelerating, and the international community is increasingly becoming a community of "one for all and all for one", and this is also the logic of the development for the global society.