Morning ClicksChina news round-up: Censors delete June 4 references, Xi Jinping tours Costa Rica

24th anniversary of the Tiananmen massacre
China Digital Times
Online censors are trying to eradicate all references to 1989.
Radio Free Asia*
Dissidents call for wearing black, lighting candles.
Tech in Asia
What to expect on June 4, China’s unofficial and Orwellian "Internet maintenance day".
Tea Leaf Nation
China’s prominent weiberati speak out on the eve of the anniversary.
Taipei Times
Theme at Taipei vigil changes from calls for rehabilitation of victims to persecution of perpetrators.
Global Times*
China needs to change gradually.
Ming Pao*
Police prevents visits to tombs, interviews by Hong Kong media.
Quartz
China patches cracks in the Great Firewall ahead of Tiananmen anniversary.
Deutsche Welle
Tiananmen Mothers slam Chinese leadership.

Xi Jinping in the Americas
Financial Times
Presidential couple seeks to inspire mood of sobriety.
Bloomberg
Xi offers Caribbean nations $3 billion US dollars in loans.
Caixin
Xi to meet Costa Rican President Laura Chinchilla, and two countries are expected to ink trade and infrastructure deals.
Beijing Times*
Costa Rica "is the Switzerland of the Americas".
Global Times*
Why Costa Rica matters: US, Taiwan.
Diario Extra
China will provide a loan of $100 million US dollars to replace Costa Rica's buses, taxis.
La Nacion
Crowd chants "Xi-Jin-Ping!" when the Chinese president arrived in San Jose.
La Nacion
China considers establishing a manufacturing zone in Costa Rica.
Tico Times
A Costa Rican company will begin exporting dairy products to two Chinese cities in coming weeks.
Teletica
Xi Jinping is "charismatic, firm in his decisions and somewhat mysterious".
El Financiero (Mexico)
Chinese investments require security.
Wall Street Journal
Xi's push for a meeting with Obama underscores his growing authority.
Reuters
No neckties: China-US summit will be casual but not relaxed.
Foreign Policy
What Obama needs to hear from Xi.

Politics
People's Daily*
Inspection teams sent to five administrative divisions, two state-owned enterprises, a bank and Renmin University.
China News Service*
State Council sets up investigative commission for Jilin fire.
New York Times
China heads to space again this month.

Civil society
The New Yorker - Letters from China
A factory burns in Jilin.
Businessweek
This week, millions of high school students in China will take the dreaded gaokao.
Xinhua
Falun Gong practitioners arrested for fabricating torture pictures in Qingdao.

Economy
Bloomberg
China's growth is being limited by struggling small manufacturers.
Financial Times
Manufacturing not commodities potential draws shoemaker to Ethiopia.
Tech in Asia
WeChat sees huge boost in the Philippines after star-studded TV ads

Foreign affairs
Time
Chinese investment is a vote of confidence to the European economy.
People's Daily*
Liu Yunshan meets a visiting Japanese multi-party delegation.
Reuters
China warns the UN against "irresponsible remarks" on North Korean refugee repatriations. 
Japan Times
China’s leaders are frequent visitors to Africa, unlike Japan’s.