A young artist performs guitar at a cloister in Spoleto, Italy, July 10, 2018. The 61st edition of the Festival of Two Worlds is held in the historical city of Spoleto, Umbria of Italy, from June 29 to July 15, 2018. (Xinhua/Jin Yu)

Artists perform in the drama "Judgement, Possibility, Being" in a gym, near Spoleto, Italy, July 11, 2018. The 61st edition of the Festival of Two Worlds is held in the historical city of Spoleto, Umbria of Italy, from June 29 to July 15, 2018. (Xinhua/Jin Yu)

Artists perform in the drama "Judgement, Possibility, Being" in a gym, near Spoleto, Italy, July 11, 2018. The 61st edition of the Festival of Two Worlds is held in the historical city of Spoleto, Umbria of Italy, from June 29 to July 15, 2018. (Xinhua/Jin Yu)

Artists perform in the drama "The Eccentricities of a Nightingale" in an auditorium in Spoleto, Italy, July 11, 2018. The 61st edition of the Festival of Two Worlds is held in the historical city of Spoleto, Umbria of Italy, from June 29 to July 15, 2018. (Xinhua/Jin Yu)