Origin

Lady Yulan is a Chinese vampire, born in the back half of the Yuan Dynasty. After being transformed into a vampire, she spent time working for Yi Yang. As immortality caused Yi Yang's mind to turn, Lady Yulan eventually fled her employment and started her own crime ring in Chinatown in Manhattan.

Creation

Lady Yulan first appears in Moon Knight (2021) #16 by Jed MacKay and Alessandro Cappuccio

Major Story Arcs

Midnight Mission

Lady Yulan became a person of interest to Moon Knight, when he turned the attention of the Midnight Mission to stopping The Structure, a vampire cult working all over New York City, except Chinatown, due to Yulan already claiming it. To keep her territory to herself, she made a deal with Moon Knight for information on The Structure's leader, Tutor.

Gang War

As part of a plot to return The Maggia to its former glory, Hammerhead sends some of his goons with a priest to take out Lady Yulan's vampire henchmen in Chinatown while framing Mister Negative. Yulan was forced to speak to Hammerhead about retaliating thanks to the network of mob bosses created by Kingpin. Hammerhead promised to take care of it for her as he had the more resources than her, one in a long line of frame-ups to keep the other mob bosses in Hammerhead's pocket. However, Hammerhead was killed by Madame Masque, ending the delicate peace he was holding together and leading to full on Gang War.

Yulan only cared about her interests in Chinatown, which brought her up against Willis Stryker and his Hydra goons, Mr. Negative and his Inner Demons, and Shang-Chi and the Five Weapons Society. Shang-Chi, still mostly a hero, tried to trick them into taking each other out, however, instead they banded together to oust the Five Weapons. Shang than led the other NYC heroes to attack him so that they would instead defend him. As the dust settled, the Five Weapons managed to retain a level of peace in Chinatown without shutting Yulan down, and Tombstone took his place as the new Kingpin of Crime.

Blood Hunt

When Darkforce users block out the sun, vampires descend on New York City to feed en masse. As Reese, Soldier and 8-Ball - members of Moon Knight's Midnight Mission - patrol the streets for survivors, Lady Yulan reveals herself with a warning. The human world that they are used to in its soft weakness has ended, and the new one will be born of monsters. Yulan admits that she also grew accustomed to the old human ways, but now is a time to harden their hearts. Lady Yulan offers Reese and Soldier sanctuary in Chinatown, but the two refuse her offer, insisting that the heroes will win and the sun will rise again. Yulan laments that she will never know, as she has not seen the sun in 700 years, and leaves them to their heroics