Jordan Matthews has been sentenced to life in prison, minimum term 18 years, for the murder of his girlfriend.
Jordan Matthews, 24, had been found guilty of murder after beating his girlfriend to death.
Matthews, of Llandaff, Cardiff, attacked XiXi Bi last August.
Cardiff Crown Court had heard how student Xixi Bi, who was just over five feet tall and weighed seven stone, suffered multiple injuries.
Matthews, a pub chef, beat his girlfriend to death because he was paranoid she was cheating on him.
Matthews struck Miss Bi with dozens of blows after seeing what he believed to be a message from the dating app Tinder on her phone.
Miss Bi, also 24, suffered 41 injuries including massive bruising and multiple fractures in the prolonged assault that started at 1.30am on August 19 last year at their flat in Llandaff, Cardiff, South Wales.
At 8.30am she collapsed due to complications from her injuries, which included a broken jaw and ribs, and Matthews called 999.
Matthews, who told police he was a black belt in karate but later admitted that was not true, pleaded guilty to manslaughter but denied murder.
A jury rejected his claim he had not intended to hurt Miss Bi and found him guilty of murder after a 10-day trial.
Sentencing him at Cardiff Crown Court on Tuesday Mrs Justice Nicola Davies said the assault was the "tragic culmination" of a course of physical and verbal abuse over a number of months.
Xixi Bi's brother Zexun told the court Matthews had "ripped the heart" of his family.