A woman from Sichuan, China, started an affair with her sister's husband and later married him after convincing him to divorce his wife.
However, after four years of marriage, she decided that he was no longer suitable for her and had him killed, reported Kwong Wah Yit Poh.
The woman, identified only by her surname Tang, 25, asked her unnamed lover to kill her husband early this year.
The man, who she befriended through social media, killed his lover's husband by stabbing him numerous times at a mountain on April 12.
Tang, however, turned herself in to the police three days later.
Both Tang and her lover were charged with murdering her husband.
She was recently sentenced to life imprisonment while her lover was sentenced to death.