The USCIS has extended its Direct Mail lockbox program to include I-800/A forms.  Applicants were previously required to file at a USCIS field office with jurisdiction over their place of residence.  The Direct Mail program allows USCIS to process applications more efficiently by eliminating duplicate work, maximizing staff productivity, and introducing better information management tools.  Starting September 25 all I-800/A forms and supplementary documents should be sent to:
U.S. Citizenship and Immigration Services
P.O. Box 805695
Chicago, IL 60680-4118

This change does not cover I-600/A filings.

In China, today September 14th, is the Zhong Qui Jie (Mid-Autumn Festival). 
Or what is commonly known as a Family Reunion Day in which all family members are united under the same moon. In the past there were some formal traditions in China but today, Chinese families celebrate by sharing dinner outdoors. Together they watch the moon. Moon Cakes are prepared and eaten by all family members. Throughout the day and especially while looking at the moon, they think about their family members that are not physically present, knowing they are sharing this moment under the same moon.