did he ever visit china?
No, but according to some historians he might have sent an embassy there.
Marcus Aurelius
A possible contact with Han China occurred in 166 when a Roman traveller visited the Han court, claiming to be an ambassador representing a certain Andun (Chinese: 安 敦), ruler of Daqin, who can be identified either with Marcus or his predecessor Antoninus. 
when did the roman empire end and start It officially started in 27 BC, got split into the Western and Eastern Roman Empires in between and ended with the fall of Constantinople in 1453. who was the ruler then? UNANSWERABLE what was the status of women then? Freeborn Roman women were considered citizens throughout the Republic and Empire, but did not vote, hold political office, or serve in the military. what was the government structure like? The three major elements of the Imperial Roman state were the central government, the military, and provincial government. can you name any personality from this entire empire be it a man or a woman? Emperors Augustus, Caligula, Hadrian, Marcus Aurelius among many other illustrious rulers. from which family did the fourth person originate? Through his grandmother Rupilia, Marcus was a member of the Nerva-Antonine dynasty. which are the good emperors of this dynasty? The so-called "Five Good Emperors" were Nerva, Trajan, Hadrian, Antoninus Pius and Marcus Aurelius. has this last emperor succeeded the third one? No, he was not the immediate successor to Hadrian. then who was? Antoninus Pius was it a kind of favor to to this person? Antoninus was gravely ill when he passed the state to Marcus Aurelius. He died two days later.
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Marcus Aurelius [SEP] Trade with Han China and outbreak of plague
A possible contact with Han China occurred in 166 when a Roman traveller visited the Han court, claiming to be an ambassador representing a certain Andun (Chinese: 安 敦), ruler of Daqin, who can be identified either with Marcus or his predecessor Antoninus. In addition to Republican-era Roman glasswares found at Guangzhou along the South China Sea, Roman golden medallions made during the reign of Antoninus and perhaps even Marcus have been found at Óc Eo, Vietnam, then part of the Kingdom of Funan near the Chinese province of Jiaozhi (in northern Vietnam). This may have been the port city of Kattigara, described by Ptolemy (c.