if all 7 players agree to 八强三轮简易双败淘汰制, then may be SIXGA can consider to implement it for the next three days, of course, in this case 卷心菜 is 8th position or no ranking position.
The good point is there is no change to the pairings for the next three rounds except you need to interchange the positions for 4th and 5th, in this situation, 胡伟良 needs to get a win in Rounds 9 or 10 before promotion, otherwise, his position is 5th under 八强三轮简易双败淘汰制 even he has a walkover tomorrow evening.