Heavy metals are found in soil and water. Crops like vegetables and rice absorb them as they grow.
High-level symposiums on traditional Chinese medicine were held in 2012 and 2014.
Healthy increase seen in orders via online platforms
Heun said the academy is expected to open branches in both China and Germany to train 50 to 200 boys at a time.
Heading for big cities has been a choice for many rural students seeking their fortune in recent decades. But many are returning.
Hilton Worldwide Holdings Inc is expected to reach 1,000 hotels in China by 2025, driven mostly by expansions in midmarket brands including Hampton and Hilton Garden Inn.
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Hillary Clinton, former secretary of state of the United States, has warned the British government that the hand of history will be "heavy and unforgiving" if the Brexit process results in a hard border between Northern Ireland and the Republic of Ireland, threatening the Good Friday agreement peace settlement agreed 20 years ago.
Held to mark the 30th anniversary of the establishment of diplomatic ties between the two countries on Tuesday, the event was entitled "The Kingdom of Saudi Arabia and the People's Republic of China: a rich history and bright prospects for the future."
He's says, "it's a very exciting time." 3 p.m.
He will end his trip on Thursday.