Knowledge: Every country believes in religion like Canada is Catholic and the United States is Christianity. Also, the United States and Canada see number 7 as a lucky number but in China, it is a bad number as it represents poor and sick.

Conversation:
7 has always been my favorite number. It's very lucky for me.
Seven is the natural number between 6 and 8.
Yes, I know. It is also an interesting number (7 deadly sins, etc) and can be known to be a lucky number.
Various Hindus wrote 7 more or less in one stroke as a curve that looks like an uppercase J but vertically inverted.
That is interesting!
More so, the western Ghubar Arabs' main contribution was to make the longer line diagonal rather than straight, though they showed some tendencies to making the character more rectilinear.
That is some great information. Is there anything else you know?
7 is not a lucky number in Japan as it calls ghosts and give illness.
Oh wow! I didn't know that. Is there another country that also believes that 7 is not a lucky number?

Response: Hmmm. Number 7 is represented as poor and sick in China.