Yéye niánqīng shí yī tiān néng chōu yī bāo yānjuǎnr.
When grandpa was young he could smoke a pack of cigarettes a day.
Tips
register
Older / more colloquial / Beijing-flavored alternative to the standard 香烟 or 烟. The 儿 ending makes it casual and slightly nostalgic, the kind of thing a grandfather might call his cigarettes.