The evidence for early Vietnamese calendar system was recorded on stone tools dating back 2200-2000 BC.
Jackie Chan | East Coast Main Line | West Coast Main Line | New Line Cinema | Cunard Line | White Star Line | The Onedin Line | Charlie Chan | Maginot Line | Great Central Main Line | What's My Line? | Walk the Line | Stena Line | Line 13, Shanghai Metro | Line 13 | A Chorus Line | What's My Line | V/Line | branch line | Wirral Line | Siegfried Line | Midland Main Line | Gyeongbu Line | Eason Chan | Line Renaud | Line Islands | Line 2 | Line 1, Beijing Subway | Line 1 | Green Line |