Grandma is blood related to Yao Zhiming i.e. she is his father's real mother. Grandma divorced Zhiming's grandfather…
my guess is that grandma was in her mid to late 50's maybe even early 60's when she married FL's grandfather; hence, the gossip and awkward relationship between FL's father and his stepmother
so YZM got the promotion that Zhang was looking for as President of Asia region What does that mean for Zhang? Wasn't she acting president? That means Xing'anli merger is up to YZM.
YZM father was surprised grandma's hotel is doing so well and he's been away for ten years., that means when grandma ran it, the business was low. She was not striving for profits; she treated the hotel as her home and the staff as her family.
The mother takes out frozen dumplings. The Chinese mothers I know make them from scratch. This eat,eat,eat , eat more is a typical Chinese mom. The mother is right. Her children should see her more often and eat with her. They should talk to her and get to know her, esp. how she grew up.