Giving red envelopes is acceptable; as long as there is no ulterior motive, it's a traditional blessing from elders to the younger generation in China, and there's nothing wrong with it. But Jiang Da Shao was worried that the red envelopes given to his son and daughter by Old Ye might have some hidden agenda. Then he thought, it's just a bit of money; doesn't Old Ye have children and grandchildren of his own? When the time comes, he'll give the red envelopes back to them as they are.
As for Lu Na and Jiang Xi, every year during the New Year, aside from the red envelopes received from their grandparents and great-grandfather, any other red envelopes received would be repackaged by their parents and given back to the other family's children.
