A Hong Kong school principal has been fired after he swore at security guards during a student trip to Singapore last month, the institution has announced. The management committee of San Wui Commercial Society Secondary School in Tuen Mun announced on Wednesday the immediate dismissal of principal Lee Cheuk-hing and its refusal to accept his resignation, submitted about a week after the confrontation. The committee received Lee’s resignation letter on May 28, with his requested last day to be..