When plucking a string, the aim should be to get the string to vibrate at right angles to the qin surface beneath that string, as this give a fuller, more concentrated sound.
(the aim; should be; to get the string to vibrate at right angles to the qin surface beneath that string; T:When plucking a string)
the aim
should be
to get the string to vibrate at right angles to the qin surface beneath that string T:When plucking a string