When the tribe's population surpassed fifteen thousand, Lanling had no choice but to decide on expanding the Flame Demon Tribe.
The original cluster of Flame Demon Tribe castles covered only three to four hundred acres, which was now far from sufficient.
Despite the expansion of the tribe exceeding all expectations, Lanling still made relevant plans.
This three to four hundred acre castle group would be considered the inner city of the Flame Demon Tribe. Outside this area, an outer city would be expanded.
As for this outer city, Lanling planned an area of about three square kilometers, equivalent to four thousand five hundred acres, which is ten times larger than the inner city.
Thus, the length of the outer city wall needed to be extended to about seven miles. The method remained the same as before: construct the wall with earth first, then overlay thick stone slabs!
