What is one of the most obvious differences between singing style in western opera and Peking operas?

One of the most obvious differences between singing style in Western opera and Peking opera is the use of vibrato. Vibrato is a technique used by singers to create a slight oscillation in pitch while singing a note. It is a common feature of Western opera singing and is often used to add expressiveness and emotional depth to a performance. In Peking opera, however, vibrato is not used and the voice is typically sung in a more straight and steady tone. This difference in singing style is due in part to the different vocal techniques used in each genre. Western opera singers typically use a technique known as "bel canto," which emphasizes vocal projection and resonance, while Peking opera singers use a technique known as "xiqu," which emphasizes clarity of diction and vocal control.