Count Martin Scorsese among director Bong Joon-ho’s biggest fans.

After “Parasite” became the first non-English language film to win the Academy Award for Best Picture, “The Irishman” director sent a “personal” letter of congratulations to Bong on his historic win.

“This morning I got a letter from Martin Scorsese,” he said during a post-win press conference in Seoul, South Korea according to IndieWire. “I can’t tell you what the whole letter was about because it’s something personal, but toward the end he wrote: ‘You’ve done well. Now rest. But don’t rest for too long.'”

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“He continued by saying how he and other directors were waiting for my next movie,” he added.

Nominated for four Oscars, “Parasite” took home four including Best Original Screenplay, the newly-renamed Best International Feature and Best Director. During his acceptance speech for Best Director, Bong, 50, gave shout-outs to his fellow nominees including Scorsese.

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“When I was in school I studied Martin Scorsese’s films. Just to be nominated was a huge honour. I never thought I would win,” he said during his acceptance speech. “I’ve seen Scorsese lose this award multiple times. He didn’t know back then but I was so frustrated, so to be nominated with him is a huge honour.”