China's top Taiwan affairs official Zhang Zhijun met his Taiwanese counterpart Saturday, with Beijing's rejection of Taipei as a founding member of a China-led regional infrastructure bank a key issue on the agenda.
China last month dashed the island's hopes of becoming a founding member of the Asian Infrastructure Investment Bank (AIIB), though a Chinese foreign ministry spokesman said at the time it could join under an "appropriate name".
The issue was raised as Zhang, director of China's Taiwan affairs office, met Andrew Hsia, chairman of Taiwan's top China policy decision-making body, the Mainland Affairs Council, in Kinmen -- a Taiwan-administered island off China's Xiamen city.
"The mainland side again voiced their welcome to our desires of attending AIIB," the council said in a statement after the meeting.
China and Taiwan split at the end of the civil war in 1949 when the Kuomintang fled the mainland after a defeat at the hands of the Chinese Communist Party. But Beijing still regards the island as a province awaiting reunification.
As a result, China routinely opposes moves by Taiwan to join international organisations, arguing it is not a country.
Earlier this month, the head of Taiwan's ruling Kuomintang party (KMT) Eric Chu said he remained "optimistic" about joining the bank and proposed joining under the name "Chinese Taipei".
Trade agreements, the opening of liaison offices and joint efforts to battle crimes were also discussed during the meeting, which is part of a two day visit by Zhang.
In his opening speech, Hsia hailed the significance of the meeting at Kinmen, which was the scene of a fierce 44-day bombardment by the Chinese army beginning on August 23, 1958, which killed 618 servicemen and civilians and injuring more than 2,600.
- Angry protests -
Zhang's visit was met by angry members from the anti-China Taiwan Solidarity Union (TSU) who waved placards and shouted, "Oppose Hsia-Zhang meeting! Taiwan interests betrayed!"
The demonstration turned violent after a TSU protester hurled a smoke grenade at Zhang's motorcade leading to a confrontation with around 20 China supporters who pushed their way through the police line that separated the two groups, police said.
Five people were injured with four of them hospitalised, police said, adding that one pro-China protester was also arrested.
"Taiwan is a democratic country, any use of violence should be strongly condemned," Hsu Ya-chi of TSU told AFP.
Tensions between Taiwan and China have decreased markedly since 2008 after Ma Ying-jeou of the China-friendly KMT came to power promising to beef up trade and tourism links.
But recently public sentiment in Taiwan has once again turned against closer ties with Beijing, with voters saying trade deals have been agreed in secret and have not benefited ordinary citizens.
In March last year, around 200 students occupied parliament for more than three weeks to demonstrate against a controversial services trade pact, while thousands rallied in support of what became known as the "Sunflower Movement".
The KMT suffered its worst-ever showing in local polls in November -- seen as a barometer for presidential elections in 2016 -- with its Beijing-friendly policy blamed for alienating voters.
Despite the setback, the embattled Ma has repeatedly defended the rapprochement with China, saying it has turned Taiwan Strait, once one of the flash points in Asia, into a peaceful area.