This very modest lake in the heart of Hanoi, emerald in color and lined with ancient trees, is like a magic mirror where everyone finds the past and the present. It is an excellent point of connection between the old business district of Hanoi and the new district. If we refer to this ying-yang theory that continues to influence the ways of thinking of Asians, this green and serene lake is precisely the ying that absorbs all the clamor of modern life, recharges all vital energy for the Dawn and rest. its spirit at dusk, gives the landscape dominated by old colonial-style buildings an oriental touch full of charm…