Definitely. Howard the Duck is indeed a Marvel Comic. It has a cult following and has been featured in multiple Marvel comic series and crossovers, adding to the rich tapestry of the Marvel universe.
Tie Lihua was a Chinese web novel. The mandarin duck pillow in it was not a real object but a fictional symbolic meaning. In the novel, the mandarin duck pillow symbolized the love and sexual desire between men and women. It was a romantic image and symbolic meaning. Although the mandarin duck pillow was not a real item, it was fully described and played into an important element in the novel.
Iron Fist belongs to Marvel. He has his own unique story and powers within the Marvel comic book world, and has also appeared in related media adaptations.
Iron Man's fate varies in different Marvel Comics story arcs. But in certain ones, unfortunately, he does die. It often depends on the creative direction and plot developments.
There are a few versions of the Iron Fist character in Marvel Comics. But it's not a straightforward number as it depends on different storylines and continuities.