SELECT "Year (Ceremony)" FROM table_49492 WHERE "Director" = 'wang siu-di'
What is Year (Ceremony), when Director is 'Wang Siu-Di'?
CREATE TABLE table_49492 (
    "Year (Ceremony)" text,
    "Film title used in nomination" text,
    "Original title" text,
    "Director" text,
    "Result" text
)