China is leveraging its production of medical equipment and expertise in halting the coronavirus as a soft-power tool.
Maduro blasted back by accusing the US and Colombia of"giving orders to flood Venezuela with violence."
More than 4.5 million Venezuelans have fled their nation's crisis in recent years,with nearly 2 million seeking jobs,shelter and healthcare in Colombia.
The country's economic collapse,coupled with its deep political divisions,has led more than 4.5 million Venezuelans to emigrate since 2015.
A coast guard sergeant guarding the ship was also injured. Locals blame pirates.
"What is a caudillo? An authoritarian. A demagogue. A dictator,"the campaign's introduction ad says in bold white letters.
Juan Guaido accused Nicolas Maduro of using his uncle,to threaten him as he returned from an international tour rallying support to topple the president.
A high-profile visit to the US by Venezuela's self-appointed interim president Juan Guaido appears to have roiled Russia.
After meeting with the Colombian President and US Secretary of State,Guaido plans to travel to the World Economic Forum in Davos,Switzerland.
Political rivals of US-backed opposition leader Juan Guaido swore in their own leader while opposition MPs were blocked from the chamber.
The summit brought together the chiefs of Brazil,Russia,India,China and South Africa but avoided the thorniest issues.