Korean New Wave
This one has a clear starting date. On October 4, 1996, South Korea's Constitutional Court ruled prior censorship of film unconstitutional. One trigger, it's said, was an incident that September at the Busan film festival, where a foreign film was cut by about ten minutes. Censorship shifted from screening to rating, and what filmmakers could shoot expanded.
There's another system that supported the industry: the screen quota, a rule requiring domestic films to be shown a set number of days a year. It began in 1966 and at its peak required 146 days a year (cut to 73 in 2006, half the original). It's said to have protected the market during years when capital was thin, laying the ground for growth in the 2000s. In 1999, Shiri drew 2.43 million viewers in Seoul, surpassing Titanic, released two years earlier. It's called Korea's first blockbuster.
Then, in 2019, Bong Joon-ho's Parasite won the Palme d'Or at Cannes, and at the following year's Academy Awards it won all four of Best Picture, Best Director, Best Original Screenplay, and Best International Feature Film. It was the first non-English-language film to win Best Picture. A film winning both the Palme d'Or and the Best Picture Oscar hadn't happened in over sixty years — this was only the third time in history. A little earlier, on the Golden Globes stage, speaking through an interpreter, he said: "Once you overcome the one-inch-tall barrier of subtitles, you will be introduced to so many more amazing films." This map being written in both Japanese and English is probably for the same reason.