September 11, 2019 | 4:02pm
| Updated September 11, 2019 | 4:51pm

A Trump-obsessed Chinese national was convicted Wednesday of sneaking into his Mar-a-Lago club in Florida.

Jurors found Yujing Zhang guilty of trespassing and lying to Secret Service agents — capping an unusual three-day trial in Fort Lauderdale federal court that was initially delayed over her lack of underwear. They deliberated for four hours beginning Wednesday morning.

The 33-year-old, who remains in custody, showed no emotion as the verdict was read.

Prosecutors said Zhang was wearing a gray evening gown when she waltzed into the Palm Beach resort on March 30 and started taking pictures — tipping off a receptionist who grew wary of her visit.

Zhang told the worker, Ariela Grumaz, that she was there for a Chinese-American United Nations friendship event, which had actually been canceled. That’s when a Secret Service agent pulled her aside to search her phone — and Zhang became “aggressive,” according to testimony.

Prosecutors said Zhang was kitted out with electronics, including four cellphones, a laptop and an external hard drive. Agents who searched her nearby hotel room found $8,000 in cash and spy-like gear, such as a device to detect hidden cameras, and numerous credit and debit cards.

Previous reports said the self-proclaimed businesswoman was obsessed with the first family because of their ties to the real estate world.

Zhang’s arrest prompted an investigation into whether she was a Beijing spy, but she faced no espionage charges. She acted as her own attorney at trial after firing her public defenders in June.

She now faces up to six years in prison when she’s sentenced Nov. 22.