I can't even sit still watching He Bingjiao grinds out a win when she lost the 3 GP in G1, followed by the see-saw deuces. Better take a break.
I'm really starting to dislike Chen Qingchen. Sure, you can have a character and yell multiple times and whatnot, but at least have some basic respect to your elders and opponents when asking for a change of shuttle. Ask nicely, look at your opponents when asking. You don't just walk around with a resting bitch face going up to the umpire while swirling your hand and walk off as if someone owes you. For such a young person at 19, gosh, what demeanor.
Facing such a tall player like Sung J Hyun means HBJ got to adjust her lifts higher but that also gives her opponent more time to reach the shots. It makes it more important for HBJ to be quicker on her feet, that's why better fitness and stamina is vital.
Don't be so harsh, cut them some slack. They are young and emotional, tend to get carried away playing the top pair in the world, most of the time they aren't like that. Otherwise, I'm sure there will be a few other players or pairs you'd be critical of.
You can tell the CH youngsters are actually in awe of their JPN opponents, that's why they reacted like that whenever they win a point against them.
I'm sure both the CHN youngsters will learn a lot from this match, it's battle like this that steels oneself.