The superstar has been a household name in China for 20 years and tasted Hollywood success with a role in the 2014 blockbuster "X-Men: Days of Future Past".
Last year, she topped Forbes magazine's list of top-earning Chinese celebrities with income of ¥300 million (RM181 million).
Meanwhile, a watchdog site covering social media censorship in China notes that concerned supporters who wondered online what had happened to Fan have since seen their posts scrubbed.
Her disappearance from the general public look for has ended in rumours about her jam. Issue-lunge Chinese language publication Securities Everyday ran a portion earlier this month that Fan had been "placed under assist an eye fixed on" and could maybe maybe merely "get appropriate judgment".
As reported on HK01, speculations about Fan's shaky position in his C-pop group Nine Percent sparked recently, when the singer revealed at his fan meeting in Nanjing that it would be his last event with the group.
Fan, the highest-paid Chinese actress and a darling of global red carpets who has expanded her career to Hollywood film roles, scored a shocking zero and was the last on a list of 100 celebrities.
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A recent report authored by academics at Beijing Normal University ranked Fan the lowest in a "social responsibility assessment" of Chinese film and television stars. In addition to film and television roles, the 36-year old actress has done commercials for high-end companies like Cartier and Mercedes-Benz. "Fan has done so much good work in the past!" one user wrote on the Twitter-like Weibo platform. It was also a marked contrast to her fiance - Chinese actor Li Chen - who ranked high on the list at seven with a score of 61.8.
Given the Chinese government's propensity for secrecy, there probably won't be any solid news until the matter is sorted out behind closed doors, and Fan pays up for her rumored tax transgressions and makes a contrite statement to the public.
For film executives, Fan's disappearance is a reminder of the perils of show business in the most-regulated major entertainment market in the world, where the Communist Party of China weighs in on everything from the appropriateness of costumes to the salaries of movie stars.
Last month, almost a dozen major Chinese film producers and video sites announced they also would boycott "unreasonable" pay for actors.
Because of this information, many of her fans claim that authorities are detaining her due to her tax evasion.
Fan is one of five leading worldwide actresses cast in the upcoming Hollywood spy thriller 355, alongside Jessica Chastain and Penelope Cruz.