a professional urban master plan location analysis map, a3 landscape format (420mm x 297mm), chinese government planning document style, clean vector graphics, white background, formal layout. layout: top title bar with bold black chinese text "qiqihar ang'angxi district master plan" and "location analysis map". upper half split into left (heilongjiang province map with ang'angxi highlighted in red, surrounding cities marked) and right (two stacked small maps: regional economic map with data callout boxes, and urban system diagram with concentric dashed circles showing service radiation layers). bottom half is a large-scale regional transportation map with light green base, ang'angxi marked with large red circle, surrounding cities as gray/teal dots, transportation lines in different colors (railway black dashed, highway red solid, national road orange, provincial road green thin), rivers in blue, district boundaries as thin red/green lines. bottom dark blue footer bar with government name white text and page number "01" at bottom right. style: formal chinese urban planning standard output, low saturation colors, vector clean lines, precise typography, symmetrical grid layout, professional government document aesthetic, no watermarks,