The main reason is that the ingredients Yan Fei prepared were 'of dubious origin,' and he had to explain it to Old Chen after he ate them, so it was better to just find an excuse not to let him eat!
Yan Fei used to find opportunities to go out himself and bring things back. But today, there was a large group of people, so he couldn't just walk out—that would be too disrespectful.
Stewed beef, roasted beef, fried beef strips, crispy chicken, stewed chicken… many of the vegetables are unique to China and are what Yan Fei excels at.
The key with vegetables is to maintain their freshness and original flavor as much as possible. The beef, however, is divided into different flavors—after referencing Western-style roast meat from the laborers, Yan Fei reckons it might suit the tastes of Dubai's people more.
As for the sweets they like, honey is readily available.