The minister described the visit as timely.
Mr Merz was accompanied by a delegation of senior business leaders and was also scheduled to visit the southern city of Hangzhou.
Spokesperson Mao Ning made the remarks at a daily press conference in response to recent U.S. allegations that China has conducted nuclear explosion tests.
China supports all efforts to achieve peace in the Ukraine crisis, a foreign ministry spokesperson said on Tuesday.
Markets in China, Hong Kong, Singapore, Taiwan, and South Korea were closed on Tuesday for the Lunar New Year holidays. U.S. markets were shut on Monday for Presidents’ Day.
The statement noted that ordinary passport holders from both country could visit China visa free.
China has dismissed the U.S. Congress’s allegation that Chinese miners are financing Boko Haram and other terrorists in Nigeria under the pretext of paying “protection money”.
They made their views known at the 55th anniversary dialogue to commemorate the establishment of diplomatic ties between Nigeria and China on February 10, 1971.
China’s foreign ministry on Wednesday said the U.S. accusation of China conducting nuclear explosive tests is entirely unfounded.
Mr Amadi said that China’s high-speed rail system reflected technological advancement.
