China and Greece have signed business deals worth about $5bn (£2.9bn) during Chinese Premier Li Keqiang’s visit.
Deals signed covered areas including exports and shipbuilding. China also showed an interest in buying railways and building an airport in Crete.
China is eager to take a majority stake in the Piraeus port. A Chinese company already runs two piers at the port.
Greece is keen to attract foreign investment to reduce its national debt and high unemployment rate.
Mr Li has been in Greece as part of a tour of European countries. It is his first visit there since he took office in 2013.