"Mr. He is still missing and is now believed to have perished in the Delaware River," Bensalem police said in a statement.
Neighbors in the township's Torresdale Manor section described He as a gentleman who was always smiling. They planned a Thursday night vigil along the riverfront.
"It's a sad, sad situation," said one, who asked not to be named. "They love the river. Who wouldn't? That's what makes this a beautiful community."
He was self-employed, according to neighbors. A profile on LinkedIn identified He as the owner of Bill's Point of Sale Software shop, which it says designed and developed custom business software.
Calls and messages left at the business went unanswered Thursday.
He's wife, Ping, was distraught, according to neighbors. A man at the He household declined to comment Thursday afternoon as he exited the house.