Actress Nayanthara and the team of ‘Hi’ surprised veteran actress Radhika Sarathkumar to celebrate her 40 years in films. Radhika thanked them on Instagram. The film, produced by Zee Studios South, The Rowdy Pictures, and Seven Screen Studios, stars Nayanthara and Kavin, with music by Jen Martin and direction by debutant Vishnu Edavan.