A 31-star US flag is seen shortly after an adult Wong Fei Hung attempts to defend the Po Chi Lam clinic from a fiery attack. The 31-star flag was used from July 4, 1851 to July 3, 1858. Wong Fei Hung was born on July 9, 1847, and so could not have been older than a few days shy of his eleventh birthday when this flag was still in use. Also, the rows of stars shown on the 31-star flag are inverted. The flag shown has rows of 7, 6, 6, 5, and 7 stars respectively (from top to bottom). The actual flag has rows of 7, 5, 6, 6, and 7 stars top to bottom.