Cheng Nan-jung was born in 1947. Known by his friends as 'Nylon,' he founded the Freedom Era Weekly (自由時代週刊) in 1984 at a moment when Taiwan was still governed under martial law, and when publishing certain views on Taiwan's political future could result in prosecution. Cheng was explicit about what he was doing: the publication existed, he said, to fight for one hundred percent freedom of speech.

In 1988, he published a draft constitution for an independent Taiwan republic, and the government charged him with sedition. Rather than comply with the summons, Cheng barricaded himself inside the Freedom Era Weekly office in January 1989, where he remained for seventy-one days, giving interviews, writing, and preparing for an end he had already decided upon. On the morning of 7 April 1989, when police finally moved to enter the building, he set fire to the office and died inside. His death shocked Taiwan and, ultimately, the country.

To understand what Cheng's death meant requires understanding the Taiwan of 1989. Martial law had been lifted only two years earlier, in 1987 — after thirty-eight years in force, among the longest periods of continuous martial law in the world's modern history. The period known as the White Terror had seen thousands imprisoned, and hundreds executed, for political opposition. Cheng was not the first dissident to face these pressures, but his was among the most dramatic individual acts of resistance that era produced.

His self-immolation shocked the Kuomintang party-state and galvanized the democratic movement. It directly influenced the 1990 Wild Lily Student Movement, in which students occupied Chiang Kai-shek Memorial Hall and demanded democratic reforms. Article 100 of the Criminal Code — the sedition provision under which Cheng had been charged — was amended in 1992. In 2017, the Executive Yuan designated April 7, the anniversary of his death, as Free Speech Day in Taiwan — a designation made in December 2016, first observed in 2017. The country's democracy, which today ranks among the most robust in Asia, was built in part on sacrifices like his.

The Cheng Nan-jung Liberty Museum was inaugurated on 10 December 1999 — Human Rights Day — on the exact site where Cheng died. That choice of location carries deliberate meaning. The museum does not stand apart from what happened; it stands where it happened. To visit is to occupy the same physical space where Cheng spent his final weeks and made his final choice.

The museum houses original manuscripts and personal objects that belonged to Cheng Nan-jung. Copies of the Freedom Era Weekly — the magazines he published, the pages for which he ultimately gave his life — are preserved here as well. These are not imposing artifacts. They are the working materials of a man who believed that words mattered enough to die defending the right to print them. The museum holds them with corresponding care.

Small museums built around single lives carry a particular kind of intimacy. The Cheng Nan-jung Liberty Museum is not a grand institution; it is a careful one. It asks visitors to consider a specific life, a specific decision, and what that decision cost.

In the years since 1989, Cheng has been recognized as one of the central figures in Taiwan's democratic transformation. His face appears in murals, his name attaches to streets and foundations, and April 7 is now a day of civic reflection. But the museum resists the tendency of memorialization to smooth over the difficulty of what it commemorates. Cheng was a man in an office, under siege, facing a choice no one should have to make. The museum keeps that human reality present alongside the historical significance. It is located in Songshan District, a short walk northeast of Zhongshan Junior High School Station on the Taipei Metro.