On June 4, PIA Airbus A320 aircraft registration AP-BON arrived at Shenzhen Bao'an International Airport, China, at 7:21 AM as flight PK8544 (probably chartered) from Islamabad International Airport.
Islamabad to Shenzhen flight completed in 5 hours & 20 minutes. The aircraft left Islamabad at 11:01 PM on June 3.
The aircraft transported delegation of Pakistani businessmen representing 79 Pakistani companies who will attend Pakistan China Business Conference in Shenzen on June 5, 2024.

Source:
flightradar24.com

Pakistan China Business Conference in Shenzen venue.
Abbas