1960s Mandarin-language Movies

The Crimson Palm(1964)

Ling Bo is Lin, a young man engaged to the daughter of a rich man, who now despises Lin because of his family's declining status. Lin visits his beloved fiancee before he heads towards the imperial city to participate in the civil service examination, only to find her maid lying dead in blood. Lin is then accused of murder. How can Judge Bao prove his innocence?