Selby, McGill and Jiahui into Snooker World Championship quarters
Selby claimed a 13-7 win over Wilson and will now face Scot John Higgins in the next round.
Jiahui picked up a 13-7 victory of his own, in impressive fashion over Robert Milkins, and will take on McGill. The Scot overcame Jack Lisowski 13-8 to secure his spot in the quarters.
A look at all of today's matches at the Crucible...
Robert Milkins 7-13 Si Jiahui
Milkins was the first to draw blood, claiming the opening frame, but it was a false positive for the Englishman - as Jiahui then raced into a 4-1 lead.
The Chinese starlet didn't drop much of his pace before the break, storming to a 10-3 lead in a relentless display.
Milkins managed to pull back a few frames in the closing stages, but the match-up had already been pulled away from him and Jiahui claimed a resounding victory at 13-7.
Gary Wilson 7-13 Mark Selby
'The Jester' started well, but his opponent didn't allow him to run away with it early on. After the first 12 frames, the match was tied at 6-6.
Wilson then lost his grip on the tie as Selby marched ahead and claimed the following five to no response.
At 11-6 to 'the Jester', it looked bleak but Wilson clawed one back. It wasn't enough, though, and two more frames for Selby sealed the result.
Anthony McGill 13-8 Jack Lisowski
McGill set a blistering pace before the break and stormed to a 10-1 lead over his English opponent. Lisowski, though, found form shortly afterward and clawed the score-line back to 10-5.
The Scot showed some cracks in his game and saw his lead slip to just 11-8 after he won just one of eight frames after claiming his tenth frame.
McGill, who still had relative control of the tie, booked his place in the quarter-finals, winning the two final frames for 13-8.