The walls of Hong Kong House next to Sydney's Town Hall are covered with yellow, pink and blue Post-it notes.
All along the heritage building that houses Hong Kong's economic and trade office are messages of solidarity with the city's "umbrella revolution".
An endless supply of Post-it notes and pens sit at the ready for use by passers-by.
Hundreds have been written by Australian students, parents and tourists. Hundreds more have already blown down the streets of the CBD.
The umbrella revolution began in Hong Kong last week. Tens of thousands of people took over Hong Kong's highways, calling for Beijing to allow free elections in the semi-autonomous city.
"Democracy is not only about Hong Kong, it's about a hope for the future," said one note as it peeled off the sandstone wall.
"People have this belief that one person can't make a difference, " said Natasha Adams, 25, from Newtown.
"But if people keep posting, one by one, all over the world, things can change."
Throngs of people walk by, taking photos on their smartphones and sending them around the world by Twitter, Instagram and Facebook.
"Free H.K, love England", reads one note. Others, from Norway, Taiwan, Vietnam and Italy, cascade down the wall.
"It's inspiring to see a whole lot of different communities come together," said Elizabeth Humphrys from Potts Point.
"I don't feel like it's far away. All of these countries, we are so closely interconnected now."
A number of students from Hong Kong who posted notes on the wall asked not to be named. They said they were fearful of being recognised by Chinese authorities.
But not everyone who stared at the wall was enamoured with the umbrella revolution.
Gordon Chau, a student from Hong Kong, said he was concerned about the economic implications of the continued protests.
"If we keep pushing away from China, our economy will go downhill," he said.
"People who come from Hong Kong, we can't challenge the Chinese."
He said many of his friends were involved in the protests and that "they didn't know what they were doing".
"I am worried about another Tianamen. The police are trying their best; they are just trying to protect the protesters."
A spokeswoman for Hong Kong's economic and trade office, which is officially tied to the Chinese government, would not comment on whether there were plans to remove the notes.
"We respect their freedom of speech and their right to protest," she said.
"As the owner of a heritage building, we are obliged to keep the whole building, including its facade in a proper condition. We will see how this can best be achieved in the current circumstances."
