A woman looks at Japan s Nikkei 225 index and stock prices shown at a securities firm as others walk across an intersection in Tokyo, Tuesday, Dec. 27, 2022. AP
China has abruptly reversed its strict pandemic restrictions even as a surge in infections overtakes the country.
The curbs had torpedoed the economy and sparked nationwide protests.
The latest easing will see three years of border controls end on January 8 when Beijing downgrades Covid-19 to a Class B infectious disease.
People in China have since gone rushing to search for overseas flights, with the reopening set to be a boon for the travel industry.
China's benchmark Shanghai index and the second index in Shenzhen both posted healthy gains, while Tokyo ended a shade higher with Seoul, Singapore and Mumbai all also up.
Markets in Hong Kong and Sydney were still closed for a holiday.
"Global equities climbed Tuesday while the dollar declined amid positive sentiment from China upping the speed limits on zero-Covid off ramps and the softening of a key inflation measure in the US," Stephen Innes of SPI Asset Management said.
"Inbound tourism is not a huge economic bounty for China relative to domestic tourism but policy fast-track and early zero-Covid exit means growth could recover enormously," he added.
Markets have also been buoyed by fresh data last week that indicated a slowing of US inflation, as well as an uptick in consumer spending, which saw Wall Street take gains into the Christmas break.
But the news was not definitive and all eyes will be on how the Federal Reserve raises interest rates to balance inflationary concerns alongside the possibility of a recession caused by increased borrowing costs.
Following a holiday for commodities traders on Monday, oil continued its surge after a senior official said Russia could cut up to seven percent of its production next year.
Production was also curtailed by freezing conditions in the United States, where more than 1.8 million barrels a day of oil processing capacity in Texas was hit by the extreme weather, according to Bloomberg News.
Both Brent Crude and West Texas Intermediate jumped around half a percent on the supply shortfalls and expectations of renewed demand from China.
Key figures around 0730 GMT
Tokyo - Nikkei 225: UP 0.2 percent at 26,447.87 (close)
Shanghai - Composite: UP 0.98 percent at 3,095.57 (close)
Dollar/yen: UP at 132.88 from 132.62 on Monday
Euro/dollar: UP at $1.0664 from $1.0631
Pound/dollar: UP at $1.2104 from $1.2063
Euro/pound: DOWN at 88.10 pence from 88.13 pence
Brent North Sea crude: UP 0.6 percent at $84.39 per barrel
West Texas Intermediate: UP 0.5 percent at $79.98 per barrel
New York - Dow: UP 0.5 percent at 33,203.93 (close Friday)
London - FTSE 100: UP 0.1 percent at 7,473.01 (close Friday)
Hong Kong - Hang Seng Index: DOWN 0.4 percent at 19,593.06 (close Friday)