Using a temporary table in dynamic sql in a stored procedure

SET NOCOUNT ON

Declare @Sql Nvarchar(max),@Sql1 Nvarchar(max)

CREATE TABLE #tmpCity (CityIDP BigInt, CityName Varchar(50))

SET @Sql = 'INSERT INTO #tmpCity SELECT CityIDP, CityName  FROM mCity'
EXEC(@Sql)
SELECT @@ROWCOUNT
SET @Sql1 = 'SELECT * FROM #tmpCity'
EXEC(@Sql1)
GO
drop table #tmpCity