List of countries with overseas military bases - Wikipedia
en.wikipedia.org
In what world does China investing in other countries have anything to do with their military ambitions? China doesn't have expansionist views, they don't have a network of military bases around the world or even (arguably close) a blue water Navy. They're very much focused on their economic growth and their military posture is pretty much exclusively focused on defence. Their only real contentious issue is Taiwan and some minor local territorial disputes.
Over the past decade China has been building island bases across the south China Sea (quite literally building the islands too in some cases) closer to other countries than China.
China 'building runway in disputed South China Sea island' - BBC News
Satellite images show China is making progress on building an airstrip on a reef in disputed territory in the South China Sea, a report says.
www.bbc.co.uk
It very much has expansionist views