A Cupertino day spa that investigators say quietly ran a busy brothel for years is now at the center of a felony criminal case against its owners and a manager. Lin Wang, 46, Xian Wang, 48, and Rui Wang were taken into custody on Sept. 10 after prosecutors alleged that Hummingbird Day Spa was pulling in roughly $700,000 a year by offering sexual services to as many as 30 men a day.
The Santa Clara County District Attorney's Office described the case as a task force bust of a busy Cupertino brothel, according to the Santa Clara County District Attorney's Office. The office said it charged the married owners and an employee of Hummingbird Day Spa for running a brothel bringing in about $700,000 a year. Lin Wang and Xian Wang are accused of owning and running the business, while Rui Wang is identified as a managing employee, according to KRON4.
Lin Wang and Xian Wang, both of San Jose, have owned and operated Hummingbird Day Spa since 2022, per the same report. Rui Wang is from Sunnyvale. All three were charged with felonies including pimping, pandering, money laundering and payroll fraud, and they face possible prison time if convicted.
How the Investigation Started
The Santa Clara County District Attorney's Human Trafficking Task Force began investigating Hummingbird Day Spa in March after community members reported illegal sexual activity at the spa, prosecutors said. Investigators determined the business was operating a busy brothel that was marketed to male customers and saw a high volume of men entering over a short period each day, according to the DA's office.
A forensic financial analysis indicated that all three defendants collected, concealed and integrated illicit funds. Prosecutors allege the profits were funneled through mortgage payments on properties in San Jose and Chino Hills, as well as other investments, with all three defendants using the illicit funds to help maintain the business and cover personal finances and mortgages. Two women connected to the case received support services, the outlet reported.
DA Points to a Broader Message
District Attorney Jeff Rosen said there is no room in Santa Clara County for the criminal exploitation of human beings. Rosen also said there is no room in our neighborhoods for working brothels. Lin Wang, Xian Wang and Rui Wang were slated to appear at a Thursday afternoon arraignment at the Hall of Justice.
Part of a Wider Regional Pattern
The Hummingbird Day Spa case follows a string of similar enforcement actions across Santa Clara County over the past year. San Jose police conducted focused enforcement operations targeting illicit massage businesses during the first week of February, working with the county's Human Trafficking Task Force, the FBI and the Department of Homeland Security, according to the San José Police Department. During those operations, detectives served search warrants at two suspected illicit businesses on Feb. 2 and reported finding evidence consistent with illicit massage-business activity, and on Feb. 4 they cited an adult male for intent to purchase commercial sex and seized more than $6,000.
In a separate, larger case, prosecutors charged a San Jose family with operating at least 10 commercial-sex brothels across Santa Clara County, including locations in Cupertino and Mountain View, according to ABC7 News. That alleged operation generated about $1 million a year, and the defendants in that case faced 26 felony counts including conspiracy, pimping, money laundering and tax fraud.
Another investigation found that two Mountain View businesses were part of a network of alleged brothels operating across Cupertino, San Jose and Gilroy, per the Mountain View Voice. Local police agencies partnered with the FBI to raid those two storefronts along with eight other establishments after a months-long investigation, and a related probe linked at least 10 active massage parlors to a single alleged network and more than 2,400 commercial-sex advertisements. Authorities in that Mountain View-area case also identified 18 commercial-sex survivors and five suspected sex buyers during searches in December 2025.
Reporting Suspected Trafficking
Santa Clara County officials have asked anyone with information about suspected human trafficking to contact the county's Human Trafficking Hotline at 877-363-7238 or email [email protected]. Tips can also be directed to the Santa Clara County law enforcement human trafficking reporting line at 408-792-2700.
