I don't know why this person is named 黎卓成/Lai Cheuk-Sing and "Sing Lai" which makes even less sense:
https://hkmdb.com/db/people/view.mhtml? ... ay_set=eng

The script supervisor in his only movie is credited as 梁卓, who already exist as Leung Cho:
https://hkmdb.com/db/people/view.mhtml? ... ay_set=eng

If no one objects, I will soon change the script supervisor to Leung Cho and afterwards delete Lai Cheuk-Sing.

Thanks to an archived webpage I found out that Lai Cheuk-Sing's profile was the first entry of a different person, which has been added later separately to the database as Lai Tsoek-Sing.

My funny theory is this:
Lai Cheuk-Sing was added accidentally to "Book without Words", because Leung Cho is credited directly below the unit manager 黎海 (see picture) and 黎 and 梁 resemble each other a little bit. Afterwards the editor searched with the wrong combination 黎卓 and accidentally again (still disctracted?) chose 黎卓成. When some time later all but one of Lai Cheuk-Sing's credits were moved to Lai Tsoek-Sing, only his "Book without Words" credit could not be re-checked.

Replaced Lai Cheuk-Sing with Leung Cho and deleted Lai Cheuk-Sing's obsolete profile.