The effort had the opposite affect, according to reports from Hong Kong itself, and thousands more turned out over the weekend to protest not just extradition, but the treatment of fellow Hong Kong citizens.
In accordance with the universal values of freedom, democracy and human rights, anti-crime cooperation should not be codified in a bill that erodes human rights, the resolution said.
Dozens held signs and chanted outside the building downtown, calling for the withdrawal of the Hong Kong Extradition Bill. Also, while most people in Hong Kong are ethnic Chinese, they mostly identify themselves as "Hong Kongers" and not as Chinese.
They were streaming into an outdoor space near the city's legislative chamber that had been closed earlier in the day, allowing police to reopen roads that had been blocked since Sunday's protest.
Meanwhile, Legislative Speaker Su Jia-chyuan (蘇嘉全) said the resolution clarified the position of the legislature on the extradition bill controversy.
The estimate has not been independently verified but if confirmed it would be the largest demonstration in Hong Kong's history.
During a press conference on June 15, Lam again justified the need to amend the existing extradition law, citing judicial obstacles over sending a homicide suspect back to Taiwan for prosecution. The Hong Kong government should properly respond to the opinions of its people, he said.
In response to the Hong Kong government's decision to suspend the extradition amendment bill, UK Foreign Secretary Jeremy Hunt said on his Twitter feed: "Well done HK Government for heeding concerns of the courageous citizens who have stood up for their human rights".
Wayne Chan Ka-kui, head of the Hong Kong-based organization Students Independence Union, was among those attending the Taipei rally.
Many here believe Hong Kong's legal autonomy has been significantly diminished despite Beijing's insistence that it is still honoring its promise, dubbed "one country, two systems", that the territory can retain its own social, legal and political system for 50 years after the handover in 1997.
The English-language China Daily reported Monday that Hong Kong parents took to the streets on Sunday in order to urge USA politicians against interference in the city's extradition amendments - raising the eyebrows of China watchers after posting the story to its official Twitter account. However, the city has seen the encroaching influence of the CCP in local politics, education, and freedom of the press in recent years.
Universal suffrage - which in Hong Kong is shorthand for direct elections of the city's chief executive - was the main goal of the Occupy protests.
Xi is not used to such challenges, having consolidated his power and tightened his grip on civil society on the mainland since taking office in 2012.
But the situation remains fluid and more mass protests could bring a re-think by Beijing's leaders.
"She is no longer qualified to be Hong Kong's leader", Wong told reporters. However, Beijing considers the island nation a renegade province that should be united with the mainland, with military force if necessary. They are separate, and they want to stay that way. But we [Hong Kongers] can not.
British Prime Minister Theresa May will raise the protests with Chinese Vice Premier Hu Chunhua, who is on a visit to London to boost economic and financial cooperation, May's spokesman said.
Hong Kong activists are encouraging the public to support strikes by workers, teachers and students on Monday.
It's a framework that has been tested repeatedly in the ensuing two decades and stems from an intractable problem in China's approach to Hong Kong.
According to Taiwanese media NOWnews, William Lai, Taiwan's former premier, also took part in the rally on June 15.