1. Community Cultural Activity Centers: Various community cultural activity centers in Xian'an District often organize a variety of cultural activities, including ballroom dancing and other dance activities. You can consult your local community cultural activity center to see if there are any cotillion activities.
2. Dance Schools or Dance Training Institutes: There are some dance schools or dance training institutes in Xian'an District that may provide training and activities for ballroom dancing. You can consult the relevant organizations on the internet or by phone to learn about cotillion.
3. Square Dance: Square dance is a very popular fitness dance, and there are often square dance activities in parks and squares in Xian'an District. You can keep an eye on your local square dance events to find out if there are cotillion performances and activities.
It should be noted that due to time and space changes, the above information may have some inaccuracies, and you are advised to verify it by phone or other means before going to the relevant places.