By Agence France-Presse
A close eye is being kept on China this week after Vice Premier Liu He led the country's top economic officials in a coordinated drive to shore up beleaguered equities, which have fallen more than a quarter this year.
The Shanghai Composite Index piled on more than two percent after that, with observers suggesting government-backed funds known as the National Team helped provide support.
And those gains filtered through to Monday after further support measures, with President Xi Jinping promising help for non state-backed firms, while authorities also unveiled a plan to lower taxes.
The moves came as data Friday showed the world's number two economy grew at its slowest pace for nine years during the third quarter.
The announcements helped Shanghai rise 4.2 percent Monday, while Hong Kong added 2.4 percent.
Stephen Innes, head of Asia-Pacific trade at OANDA, said: "The big noise in local markets is the much-anticipated personal tax cuts are a bit more free-handed than had been expected. And what investor doesn't like the sound of tax cuts?"
However, he added Chinese "markets remain under pressure from every economic angle leaving more than a few investors extremely sceptical Friday's recovery will have lasting legs".
- Geopolitics in focus -
Elsewhere in Asia, Tokyo reversed early losses to sit 0.4 percent higher, Singapore gained 0.3 percent, Seoul put on 0.1 percent, Manila added more than one percent and Taipei rose 0.6 percent.
Sydney, Bangkok and Jakarta all fell.
While China-US trade tensions simmer, investors are also having to consider other brewing problems, with the US saying it will pull out of a decades-old nuclear treaty with Russia, which Donald Trump accused the country of long violating.
Russian deputy foreign minister Sergei Ryabkov warned withdrawal "would be a very dangerous step".
That comes as pressure grows on Saudi Arabia as it admitted a journalist critical of Riyadh had been killed at its Istanbul consulate.
"Geopolitics looks like dominating the news flow this week and what that does to risk sentiment and oil prices will... be important for markets," said Ray Attrill, head of forex strategy at National Australia Bank.
He added that this would be "most obviously regarding the international outrage over Jamal Khashoggi's killing and now the US decision to pull out of the 1987 Intermediate Nuclear Forces Treaty ahead of a visit to Moscow by John Bolton, President Trump's hawkish national security adviser."
There are also concerns about an increasing row between Italy and the European Union over the populist government's wallet-busting budget.
Officials in Brussels said the spending plan was an "unprecedented" deviation from EU rules, while Moody's downgraded Italy's debt rating by a notch.
Key figures around 0420 GMT
Shanghai - Composite: UP 4.2 percent at 2,656.87 (break)
Tokyo - Nikkei 225: UP 0.4 percent at 22,620.45
Hong Kong - Hang Seng: UP 2.4 percent at 26,173.98 (break)
Euro/dollar: UP at $1.1513 from $1.1511 at 2100 GMT on Friday
Pound/dollar: DOWN at $1.3070 from $1.3066
Dollar/yen: UP at 112.60 from 112.50 yen
Oil - West Texas Intermediate: UP 26 cents at $69.38 per barrel
Oil - Brent Crude: UP 17 cents at $79.95 per barrel
New York - Dow Jones: UP 0.3 percent at 25,444.34 (close)
London - FTSE 100: UP 0.3 percent at 7,049.80 (close.