April 28, 2015 2:14 PM EDT

An ad made by 3M brand Post-It in Korea shows a man renting out three floors of a skyscraper for an elaborate marriage proposal.

A description of the spot says he used 250 people to create an image of a heart with Post-It notes and a special message asking his girlfriend to marry him. The clip has racked up nearly 2 million views on YouTube since it was uploaded on April 19.

The ad was made in honor of White Day, a South Korean holiday similar to Valentine’s Day in which men give women candy and gifts (whereas on Valentine’s Day, women give men sweets).

(h/t AdWeek)

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Write to Olivia B. Waxman at olivia.waxman@time.com.

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