From Senses of Cinema:

The Orphan (1959/60) was produced by the late Hong Kong actor/producer, Ng Chor-fan (1911 - 1993), a much loved and enduring figure in the history of Cantonese cinema. Mr. Ng's last quest was to find the colour original of his long-lost The Orphan. Sadly, he died a disappointed man, close to the time when the HKFA formally began. The film starred 18 year old Bruce Lee as a HK rebel without a cause just before he quit HK for the US - the standard starting point of Bruce Lee biographies. In 1994, Cynthia Liu Chu-fun - then, as now, HKFA's Senior Manager - was in London searching through laboratories on the off-chance that old negatives of HK films had been stored and forgotten there. At Rank Laboratories, she was immediately handed about ten of them, mostly from the '50s or '60s, among them the long-sought The Orphan! Rank simply gave her the negatives, most of them in mint condition. "They did it without charging me a penny," she recalls. In the late 1950s and early 1960s, Hong Kong had no technology for developing colour films so colour negatives were processed in either Japan or London, and sometimes remained there. "That's how we found Bruce Lee's The Orphan," says Ms Liu. "The negative was just there and nobody realised. I am sure there are HK films everywhere all over the world." It was a major break for the then year-old Archive, housed at the time in a temporary hut in Eastern Tsim Sha Tsui.