Burning - Chang -dong-Lee (2018)
Chang-dong-Lee is one of my favourite directors. I've seen all his films and watched Poetry & Secret Sunshine multiple times.
After an 8 year break, the new one is an enigmatic mystery thriller with a slippery, subtle feel that is rich in symbolism and open to interpretation.
I loved it and want to rewatch asap.
If you have seen his previous films then it's a no brainer, must see. If you haven't, I'd watch Poetry & Secret Sunshine first.
Although this is a standalone film, the previous two will put you in the mindframe.
Best Korean film since The Wailing.
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Brief Encounter is a masterpiece.