There are clear lines on the Taxiway for the pilot to follow, it is design such that as long as you keep the center line of your nose wheel on the line, you have enough clearance on all side.
Since the China Air plane is park, so there are only 2 possibilities.
The China Air is park in a wrong position - They have markings on the parking bay for different aircraft type, the Marshall will guide the aircraft to the appropriate line on the ground base on the aircraft type. Unless he screw up and the tail is sticking out more then it should but still, the clearance is big enough to avoid a collision
Or the pilot in SQ can't see or did not follow or follow the wrong line on the taxi way, then he is screwed, if the visibility is so bad that you can't even see the center line, he should not have proceed.
please la, people,
I read da paper this morning they said overcast sky in Beijing dropped visibility to just 1.1 km
how could da pilot see wingtips from where he sat