Technically, the bow was a military weapon in Korea until 1894. Also, Koreans believe they and Manchus are directly connected to each other, that Manchus are a break-off from Koreans.
Here is from correspondence Peter Dekker and I had a few months ago on the subject (I just put my part of the conversation):
It is mainly translations from Korean, so some romanization, interpretation, etc. might be different from what's in books written in English. Also, things are not necessarily in order, as the info came from various Korean sources.
1. Ching's motto was 愛新刻羅: "Love of Silla (a Korean kingdom) is carved in our hearts".
2. Ching's ancestry is from the Jurchen, who established the Jin (Keum/Kim) dynasty.
3. The Manchus were a branch of the Joseon people from Baekdu Mountain.
4. The first ancestor of Jin (Kim) was Kim Haeng (Kim Ham-bo), who was the great-grandson of the last king of Silla, King Gyeong-sun. The king's son, the grandfather of Kim Ham-bo, Maeuitaeja, went into a deep mountain and never returned.
5. Kim Ham-bo's people failed to gain back Silla from Goryeo, so they went north.
8. Nurhaci, who was born around Baekdu Mountain, founded the Later Jin (Kim) dynasty, which later became Ching.
9. Nurhaci called his dynasty Later Jin (Kim) because his ancestor built Jin (Kim)
10. During the 1592-98 Japanese invasion of Korea, Nurhaci sent a letter to Joseon stating that, "Rats invaded my parents' country!"