Thread of Karma (因果之线; yīnguǒ zhī xiàn)
The Red Thread of Fate (simplified Chinese : 姻缘红线; traditional Chinese : 姻緣紅線; pinyin: yīnyuán hóngxiàn), also referred to as the Red Thread of Marriage, and other variants, is an East Asian belief originating from Chinese legend. According to this myth, the gods tie an invisible red cord around the ankles of those that are destined to meet one another in a certain situation or help each other in a certain way. Often, in Japanese and Korean culture, it is thought to be tied around the little finger. According to Chinese legend, the deity in charge of “the red thread” is believed to be Yuè Xià Lǎorén (月下老人; literally: “old man under the moon”), often abbreviated to Yuè Lǎo (月老), the old lunar matchmaker god, who is in charge of marriages.
The two people connected by the red thread are destined lovers, regardless of place, time, or circumstances. This magical thread may stretch or tangle, but never break. This myth is similar to the Western concept of soulmate or a destined flame.
Types of Thread
Black Thread represents one's enemies. (Alive)
Blood Red Thread represents one's enemies. (Dead)
The colour of blue represents the Blue Thread of Family. (Mortals)
Gold Thread represents friendship. (Cultivators)
Pink Thread of Marriage (粉红色的姻缘; fěnhóng sè de yīnyuán). Only those who have consumed their relationship will have this thread.
White Thread reprents neutrality.