Complex sentence: A CFG spokesman said many stars answered Han's call to appear in the film and waived their fee, helping it keep its modest budget of 60--70 million yuan (US $8.8--$10 million).
Split into simpler sentences: A CFG spokesman said many stars answered Han's call to appear in the film, and waived their fee. Thus, the movie kept to its modest budget of 60--70 million yuan (US $8.8--$10 million).