WHITE DAY (14 MARCH)

In the Taiwanese drama series, "Hanazakari no kimitachi e", there was this episode where a fan gave a box of chocolates to the character played by Wu Chun because it was Valentine's Day.  Initially I had thought that Valentine's day was on the 14th of February but I only found out after reading an article on a new series by Ella (who played the female lead in the drama with Wu Chun) that she and her new leading man, Jerry Yan, would be having some promotional activity on a Valentine's day which falls on March 14th. This was referred to as White Valentine's Day. It was then that I looked up on this particular day.  Below I am sharing with you what I found out:
WHITE DAY
White Day is a holiday celebrated on March 14, one month after Valentine's Day. In Japan this day is a widespread holiday, much like Valentine's Day. It is also observed in South Korea and Taiwan.
In Japan
In Japan, Valentine's Day is observed by females who present chocolate gifts (either store-bought or handmade), usually to a male, as an expression of love. The handmade chocolate is usually preferred by the receiver, because it is a sign that the receiving male is the girl's "only one". On White Day, the converse happens: males who received a honmei-choco (本命チョコ?, "chocolate of love") or giri-choco (義理チョコ?, "courtesy chocolate") on Valentine's Day are expected to return the favor by giving gifts, usually more expensive. Traditionally, popular White Day gifts are cookies, jewellery, white chocolate, white lingerie and marshmallows. Sometimes the term sanbai gaeshi (三倍返し?, literally, "thrice the return") is used to describe the generally recited rule that the return gift should be two to three times the cost of the Valentine's gift.
Source: http://en.wikipedia.org/wiki/White_Day