我用碧血染就桃花
[wŏ yòng bì xuè răn jiù táo huā]
The direct translation of this username would be 'I use blue/pale blood to dye peach blossoms.' A poetic expression conveying a story of deep devotion or perhaps heartache. By using one's own 'blue/pale blood', it may reflect sacrifices made in order to create or transform something, likely a romantic or tragic relationship. 'Peach blossoms' are symbolic of youth and love in Chinese culture.