2. On the eve of Tomb-Sweeping Day, on the occasion of the 60th anniversary of the construction of Sichuan-Tibet Highway, tianquan county, Ya 'an City held a public sacrifice ceremony of "Soul Returning to Erlang Mountain" to solemnly pay homage to the martyrs who sacrificed their lives for road construction 60 years ago. At 2: 30 pm, in tianquan county Martyrs Cemetery, thousands of army officers and soldiers, government officials, school teachers and students, and representatives from all walks of life expressed their infinite reverence and grief for the road-building heroes by offering flowers and chanting poems.