A Form Six student has become one of Hong Kong’s top scorers in this year’s university entrance examinations after her biology grade was upgraded following a remarking request, bringing the record-breaking total to 25 students from 16 schools who achieved perfect scores.Sunny Sun Wat-ching, an 18-year-old student at N.T. Heung Yee Kuk Yuen Long district Secondary School who sat the Diploma of Secondary Education (DSE), originally attained Level 5** in all subjects except biology, in which she...