On February 22, 1983, Yung Mei Ling wore her red warm coat and had pictures taken at the TVB headquarters. On the same day, Yung Mei Ling went to Saigon for filming an under water scene. Because of the cold weather, Yung Mei Ling turned blue and contracted a cold. .

It is speculated that this is the scene in episode 32 of "Ashes of Time" where Yung Mei Ling jumped into the water and shouted "Brother Jing" more than a dozen times. Probably Yung Mei Ling returned to the TVB headquarters to take a shower after filming. . . At that time, Yung Mei Ling had just gotten a big wave perm, so his hair was very curly. In addition, newspapers reported that the scene of the fight between the little beggar and Sha Tongtian in the water needed to be reshot. It is speculated that the scene of the fight between the little beggar and Sha Tongtian in the water was probably filmed on February 22.  Because the filming of episode 32 of "Huang Rong Falls into the Water" is not necessarily so urgent. According to the filming schedule, this scene could wait until March. It would be more reasonable to film all two scenes of falling into the water together. 

1983.2.22阿翁穿红羊毛大衣在无线总部拍照，当天阿翁去西贡拍摄一场落水戏，因为天气寒冷阿翁冻的面色发青染上伤风。。。推测就是32集《东邪西毒》阿翁跳入水中喊了十几声“靖哥哥”这场戏，推测阿翁拍完戏以后回到无线总部洗澡了。。。当时阿翁刚刚烫了一个大波浪，所以头发非常卷曲。另外报纸报道小叫花子与沙通天在水中打斗的剧情需要补拍，推测很可能2.22日这天也拍摄了小乞丐与沙通天水中打斗的戏份。。因为32集黄蓉落水并不一定这么着急拍摄，按照拍摄进度可以等到三月份的。所有两场落水的戏份一起拍了比较合理

source: https://m.weibo.cn/status/4535792980205903