website of tax authorities. Luoyang deed tax electronic tax invoice number can be queried through the website of the local tax authorities, and then log in to the website and enter the invoice code and number to query. Luoyang, also known as Luoyi and Luojing for short, is a prefecture-level city in Henan Province and a sub-central city of the Central Plains urban agglomeration. It spans the north and south banks of the middle and lower reaches of the Yellow River and is adjacent to Zhengzhou in the east.