✔ 最佳答案
1. There is no such thing as 「生約」/「死約」in law:
https://www.eaa.org.hk/ConsumerCorner/EAAarticlespublishedonnewspapersandmagazine/ColumnofEAADirectorofOperationsMrwong/MrWongNov2011/tabid/718/language/zh-HK/Default.aspx
Basically, the previous lease has fulfilled, the owner can pretty much do whatever he/she wants until a "written" lease is signed again.
2. No.
3. N/A
4. Your friend is mostly the loser in this case. The issue here is can your friend be able to leave in 1 month or 3 months.
In that case, the previous lease will tell which case it is.
5. Nowhere - as legally the owner did not do anything wrong.