Giant Brick Construction Ordered by Shi Huangdi

This page is the CodyCross answer for the clue below from La Bella Roma, Group 404, Puzzle 1 (Piazza Navona).

Question is: Giant Brick Construction Ordered by Shi Huangdi

and the answer is: GREATWALL

Word Meaning:

GREAT WALL — Synonym of galaxy filament

Definitions from Wiktionary.