She is the daughter of Chinese immigrants and grew up in the Spanish Harlem section of New York City with an elder sister and an adopted brother, both of whom were born in China.

The Pang family left Spanish Harlem when the tenements where they lived were scheduled to be razed, moving to an apartment near 97th Street and 3rd Avenue in Manhattan.

[1] After graduating from Saint Michael Academy, Pang attended New York City Community College.

[2] Pang's early jobs included being a song-plugger, which meant encouraging artists to record songs written by songwriters.

[3][4] Pang was asked to help Lennon and Ono with their avant-garde film projects, Up Your Legs Forever and Fly, in December 1970.

[6] Ono's show coincided with Lennon's 31st birthday, and a party was held at the Hotel Syracuse, which was attended by Ringo Starr, Phil Spector, and Elliot Mintz.

[10] In October 1973, Lennon and Pang left New York for Los Angeles to promote Mind Games, and decided to stay for a while, living at lawyer Harold Seider's apartment for a couple of days and then Lou Adler's house.

In December 1973, Lennon collaborated with Phil Spector to record the oldies album Rock 'n' Roll.

Lennon's drinking and Spector's erratic behavior (which included his firing a gun in the studio control room) caused the sessions to break down.

In March 1974, Lennon began producing Harry Nilsson's Pussy Cats album,[13] thus named to counter the "bad boy" image the pair had earned in the media with two drinking incidents at the Troubadour.

He and Paul McCartney mended fences and played together for the first and only time after the breakup of the Beatles (see A Toot and a Snore in '74).

[20][21] In the early summer, Lennon was working on his Walls and Bridges album when the couple moved into a penthouse apartment at 434 East 52nd Street.

[22] On the night in question, a naked Lennon excitedly called Pang to join him on the deck outside and they both watched a circular object silently floating less than 100 feet away.

Lennon completed his oldies album, which was titled Rock 'n' Roll, with the same musicians he used on Walls and Bridges.

When Pang telephoned the next day, Ono told her that Lennon was unavailable because he was exhausted after a hypnotherapy session.

Two days later, Lennon reappeared at a joint dental appointment; he was stupefied and confused to such an extent that Pang believed he had been brainwashed.

The original 500-page Loving John book focused mainly on Pang's role on Lennon's albums and sessions.

[35] The Tribeca Film Festival announced the 2022 premiere of The Lost Weekend: A Love Story, a 97-minute documentary about Pang's life and relationship with Lennon, on June 10 via virtual home viewing.

[38] The Lost Weekend appeared in theaters internationally for a limited run April 13th and 14th 2023[39][40] and became available via streaming and on BluRay in October 2023.

[51][52] Although having had no contact for 30 years, on October 9, 2006, Pang accidentally met Ono in Iceland, on what would have been Lennon's 66th birthday.